I can't think of anything current on the idiot box that is particularly funny but House can make me laugh out loud, Hugh Laurie's delivery is wonderful.
The first time I came across Little Britain I absolutely pissed myself ( it never seemed quite as funny again).
Billy Connolly in his heyday was outstanding.
I think John Cleese, Terry Gilliam, Eric Idle and Michael Palin ( and a couple of others who made up Monty Pythons Flying circus) were brilliant, probably doesn't look as funny now as then.
Mike Myers is pure comic genius ( not everyone's cup of tea I'm sure but he works for me)
Rodney Rude, also a comic genius ( too crude for many I'm sure but absolutely pin sharp in a crass way).
Tommy Cooper( English, from days gone by) hysterical!
I'm actually blessed to know one of the funniest humans who ever walked the Earth, my mate Dave who is an artist, philosopher and humour on a stick. He's a fine artist and his greatest art form is humour and he is relentless and takes no prisoners. We laugh 'til tears flow.
I'm sure I'll think of a few more.