Let's play a game of comedy connections. I'll start us off with the name of an actor, and a character they have played in a comedy, then the next poster can name another actor/character from the same comedy before naming another comedy they have been in (and what character they were). It can be film, radio or TV, as long as it is generally considered a comedy.

It would be nice to get pictures of each character so that obscure ones can be recognised.

I'll start us off with a British actor in an American comedy:

John Cleese plays Dr. Liam Neesom in 3rd Rock from the Sun

So whoever is next should name another character from 3rd Rock, then name a character that actor played in another show.

Well this kinda crashed and burned, I think I have a tendency to overwrite my OP, gonna make it simpler.

@ryan (sorry not really comfortable saying your screen-name) I don't know whether Dexter is really considered comedy, I'm sure there are funny bits but comedy wouldn't normally be what I would class it as.

However, I'll go with it to see if this can continue:

In Dexter Agent Frank Lundy  played by Keith Carradine

He also plays Penny's father Wyatt in The Big Bang Theory.