Love it, love it, love it!! I've always been a fan of stand up. When I was 8 for my county fair speech competition I performed a classic Andy Griffith piece called "What it was, was football" from memory. Listened to the classic Cosby albums growing up, & loved the Himself performance which played heavily on HBO back in my teens. Also recall a great Robin Williams special that was before his schtick got old. On one baseball road trip we almost wrecked the van because the coach was laughing so hard listening to a Carlin cassette that I'd brought along.
I LOVED watching the comedy channel when it first came out. They had something called the "Short Attention Span Theater" which was short clips of standup from around the country. Really got to see a good variety there. We have one of the best comedy clubs in the country here in Lexington (Comedy Off Broadway), but unfortunately due to my working 3rd shift on weekends, it really doesn't allow. me to get out & see the big name acts very often (read: never). I did get to see Carlin live when I was in college @ UK.
I have been a Sirius subscriber for 8 years now. 90% of the time I listen to Laugh Break, Raw Dog, or Blue Collar. I have just recently started listening to comedy on my iPhone via Pandora.
As for comedians - I have lots. But very rarely will I hear a bit that makes me laugh SO hard I can't breathe for a good 10 minutes. A few examples:
Patton Oswalt - Black Angus Steakhouse
Lewis Black - If it weren't for my horse...
Robert Schimmel - Colonoscopy (I taste metal!)
Bill Burr - Visiting his GF in Harlem
I know there are others out there I can't think of off the top of my head. There's also other great comics out there. Gabriel Iglesias, John Heffron, Greg Warren, Kathleen Madigan, Daniel Tosh, John Caparulo, Birbiglia, Louis CK. Brian Regan - for a clean comedian he is awesome.
Wish I could scrounge up some decent quality clips of the 4 I mentioned above, but youtube has been scrubbed of the good ones