Vinod Khanna started his career in villain roles but his career took off by late 70s where he was able to establish himself as hero. Most of his biggest Hits were multistarrers like Patthar Aur Payal, Hera Pheri, Paravish, Amar Akbar Anthony, Muqdddar Ka Sikandar & Qurbani.
In late 70s or early 80s, he went into politics which I felt was bad move when his stardom was there but he wasted it. However, he was in good form when Qurbani was a Blockbuster and HGOTY.
He had a solo Hit in 1990 when Jurm was a success but that decade he was fading away as he slowly began doing character roles.
There's no denying he was a star but not huge compared to Amitabh Bachchan, Dharmendra, Jeetendra and ect.
Anyway, Happy Birthday to this late actor and his talent was excellent. I'd like to mention his son Akshaye Khanna who also gave good performances as well but did not have the same success as his father.