Who was the funniest character on the Cosby show?

[Denara]

besides Cliff (bill cosby)

I say "Olivia".

I thought this was funny:
http://www.youtube.com/watch?v=F66SApyDKa8

 

[TheAccomplice]

Theo.

 

[Josh]

no no no its my man Bill, but really probably Theo? Or the oldest daughters boyfriend