Ok, this is the guy who wrote and starred in the original UK version of 'The Office'.
The basic setup is Ricky, Steve Merchant (co-writer of the office) and a radio producer (Karl Pilkington) chatting about day to day stuff.
I'm promise you that the conversations are hilarious, hence the reason when its on, its the no.1 podcast in the world.
You can still download them from various sites.
There's also a video podcast. Example here:
http://www.youtube.com/watch?v=NQBlZIXu3Yg...rl%20pilkington
If you are interesting you can read more here:
http://www.rickygervais.com/podcast.php