Continued success, acclaim and expansion to television (1960–1984)
With the beginning of the 1960s, Kumar was open to all kind of roles, whether as main lead, second lead, or in a character role. This prevented him from being type-cast and he continued to receive acclaim for his work.
It started with B. R. Chopra's courtroom drama Kanoon (1960) which also had Rajendra Kumar and Nanda in the lead. Despite not having any songs and other gimmicks required in a commercial Hindi film, Kanoon emerged a hit and went on to win National Film Award for Best Feature Film (Hindi). After playing a brief role in Yash Chopra's critically acclaimed partition drama Dharmputra (1961), the following year, he did lead roles in A. Bhimsingh's Rakhi and Phani Majumdar's Aarti. Both Rakhi and Aarti received critical acclaim and proved to be box office hits. Kumar received his first Filmfare Award for Best Actor for his portrayal of a doting brother in Rakhi. 1963 proved to be a hugely successful year for Kumar with many successes. He first collaborated with B. R. Chopra for the romantic thriller Gumrah co-starring Sunil Dutt, Mala Sinha, Shashikala and Nirupa Roy. Gumrah did very well at the box office and proved to be a superhit. For his performance in the film, Kumar won his first BFJA Award for Best Actor (Hindi). The film won National Film Award for Third Best Feature Film in Hindi. This was followed by Bimal Roy's critically and commercially successful drama film Bandini. Bandini was the last feature film directed by Roy and won him his final Filmfare Award for Best Director along with National Film Award for Best Feature Film (Hindi) as well as Filmfare Award for Best Film. Before the end of year, he reunited with Rajendra Kumar in H. S. Rawail's muslim social Mere Mehboob, co-starring Sadhana and Nimmi. The film topped box office chart in 1963 and emerged an All Time Blockbuster. Its music composed by Naushad dominated the year-end annual list of Binaca Geetmala and was the second best-selling Hindi film album of the 1960s.
In 1964, Kumar delivered two moderately successful films with A. Bhimsingh's Pooja Ke Phool and Inder Raj Anand's Phoolon Ki Sej which had Dharmendra and Manoj Kumar in the lead respectively, but his other releases, such as Chitralekha and Benazir flopped at the box office. In 1965, he had a hit in Bheegi Raat and a semi-hit in Oonche Log. The hit streak continued in 1966 with Asit Sen's Mamta which again had Dharmendra in the lead along with Suchitra Sen who played a double role. It was a successful venture domestically, but an All Time Blockbuster in overseas markets. The same year, Kumar also appeared in Brij Sadanah's Afsana which was a box office failure, but won him Filmfare Award for Best Supporting Actor. 1967 was a notable year for him as he starred in two of the biggest hits of the year - Vijay Anand's spy heist thriller Jewel Thief and A. Bhimsingh's light hearted drama film Mehrban. Both the films proved to be critical and commercial successes with Kumar getting applauded for his performances in them and receiving a nomination in the Filmfare Award for Best Supporting Actor category for the latter.
In 1968, he played the lead role in Hrishikesh Mukherjee's social drama Aashirwad. Although the film did not do well at the box office, it was a huge critical success, winning National Film Award for Best Feature Film (Hindi). Kumar's portrayal of a loving father was very well received and won him all the major accolades that year, such as National Film Award for Best Actor, Filmfare Award for Best Actor and BFJA Award for Best Actor (Hindi). One of its song "Rail Gaadi Chhuk Chhuk Chhuk Chhuk" sung by Kumar himself is considered the first rap song of Indian cinema. Kumar ended the decade on a high. He co-starred alongside Sanjay Khan and Sadhana in R. K. Nayyar's mystery thriller Intaqam which went on to become a superhit at the box office. He then did a guest appearance in Samanta's romantic blockbuster Aradhana which made Rajesh Khanna a superstar. Kumar also reunited with Hrishikesh Mukherjee for drama film Satyakam which like their previous collaboration Aashirwad met with immense acclaim and won National Film Award for Best Feature Film (Hindi).
The 1970s saw the domination of whole new generation of stars, including Rajesh Khanna, Dharmendra, Amitabh Bachchan, Manoj Kumar, Shashi Kapoor, Vinod Khanna, Jeetendra and Rishi Kapoor. Kumar worked with all of them in various successful and acclaimed films. In 1970, he played important roles in two directional ventures of Asit Sen, Sharafat co-starring Dharmendra, Hema Malini and Safar which also had Rajesh Khanna, Sharmila Tagore, Feroz Khan in the lead. Both the films emerged superhits and received big thumbs from reviewers, especially Safar which won Sen his first Filmfare Award for Best Director. He also collaborated with Manoj Kumar for his second directional, the patriotic drama Purab Aur Paschim, which proved to be a blockbuster in India as well as overseas. The following year, he appeared in acclaimed ventures, such Naya Zamana, Guddi and Adhikar. In 1972, he starred in Kamal Amrohi's magnum opus Pakeezah which had Meena Kumari as the eponymous lead, alongside Raaj Kumar. Despite getting mixed reviews and being a slow starter, it went on to become a massive blockbuster and also the final film appearance of Kumari who died few weeks after its release. Kumar then played the role of a doting grandfather in Samanta's Anuraag and a crook in Sadanah's Victoria No. 203. Both the films emerged superhits with Kumar again getting nominated in the Filmfare Award for Best Supporting Actor category for Anuraag. That same year, he reunited with Rajesh Khanna for Maalik and Dil Daulat Duniya, but contrary to expectations, both the films flopped commercially.
Kumar played small roles in both of his major releases of 1973 and 1974 which were - Dhund and Prem Nagar, respectively. In 1975, he had a superhit in Chori Mera Kaam co-starring Shashi Kapoor and Zeenat Aman. He also appeared alongside Amitabh Bachchan and Jaya Bachchan in Mili. It did average business, but won massive acclaim and is now considered a film ahead of its times. The following year, Kumar saw four profitable ventures in Ek Se Badhkar Ek, Barood, Chhoti Si Baat and Suntan. He received his fifth and final nomination in the Filmfare Award for Best Supporting Actor category for his heartfelt portrayal of a retired colonel in Chhoti Si Baat. His other successful films of the decade, include Dream Girl (1977), Anand Ashram (1977), Safed Jhooth (1977), Chala Murari Hero Banne (1977), Dil Aur Deewaar (1978), Anpadh (1978) and Khatta Meetha (1978).
Kumar began the next decade with supporting role in four hit films, including Khubsoorat, Jyoti Bane Jwala, Sau Din Saas Ke and Judaai. In 1981, he had two more box office successes with Shibu Mitra's Maan Gaye Ustaad and Pramod Chakravarty's Jyoti. He then played the lead role in Basu Chatterjee's comedy drama Shaukeen (1982), which was a commercial as well as critical success and is now considered a cult classic. In 1983, he appeared in another of Basu Chatterjee's acclaimed venture Pasand Apni Apni and Sunil Dutt's drama film Dard Ka Rishta, which proved to be a box office hit. The following year, Kumar made his television debut with the soap opera Hum Log, which was telecasted on Doordarshan and presented the story of an Indian middle-class family from the 1980s and their daily struggles. Every episode ended with the Kumar in a sharp suit and dark glasses explaining the theme of the day and prodding viewers to think about what they had just watched. During its 1 and a half-year run, he received over 400,000 letters from young viewers, asking him to convince their parents in marriage of their choice. The show proved to be a huge success with each episode having a regular viewing audience of more than 50 million.