There can be a million comedians, but there is only one Rajendra Prasad. You specifically realise this when he's dancing in this movie. Having said that, his dancing was probably introduced for that itself. Even his wig and paunch, probably. Even the plot. And all the other actors.
Harischandra (Rajendra Prasad) lives in a cinematic middleclass crisis, with a modest salary, a pesky son and an overweight wife (Raasi). But those are not the only tensions that his mind (somewhere under that wig) has to accommodate. He has other issues going on, like lending originality to his chara....