Absolutely, tough I don't watch full shows usually.

Limmy's Show, a few classic Monty Python skits come to mind.
Maybe even some (un)intentionally funny segments from the Ricky Gervais Show involving Karl.

Talking internet, ashens is also pretty good, tough the BBC and feature length stuff holds up better than reviewing tat.
TomSka technically counts too I guess, he was on Comedy Central once, but his schtick has fallen off the wayside for me.