Oh there was a big time of comedians, when Johny Walker was having two or three song in a movie as a comedian, Keshto Mukharjee had his own place in every movie, Mahmood sang the legendry song, 'kale hain to kya hua dilwale hain', one and only Tuntun used to capture all the clapings of audiance. Manorama also had her own place.
But what is this? Where are the comedians ? All the heroes are playing the role of comedian themselves. Salman Khan, Shahrukh Khan, Aamir khan Sunil Shetty and Best Suitable in comic role 'Akshaya Kumar' all are doing comic role themselves. Most of the films of last 10 years have no specialist comedian, all the heroes are doing humurous things themselves.
Amitabh bachchan, i think, was the first hero to do some comedy himself with the serious role. That time was the end of coemdians. All the comedians are vanished. Johny Lever did some good comedy and made his position amongst all the heroes.