I only started recently to listen to them.
Prior to my trip to LA last week, I downloaded the entire first series of audio podcasts done by Ricky Gervais, Stephen Merchant, and Karl Pilkington.
Ricky and Stephen are mainly known for their work on the British hit comedy "The Office". The American version is still doing well (surprisingly).
Get some details at
www.rickygervais.com.
What podcasts do you listen to?