My normal listening:
- PC Pro (techy stuff)
- Gareth Jones On Speed (car-geek/motorsport stuff)
- Mitch Benn (half an hour of comedy songs, mostly other people's)
- Answer Me This (comedy)
- BBC R4 Friday Night Comedy
- Infinite Monkey Cage
Have downloaded for weeks when I have more time (long boring car journeys, etc)
- Guardian Tech Weekly
- Windows Weekly
- T3
- Gamers With Jobs Conference Call
- Freakonomics Radio
- BBC Comedy of the Week
- Desert Island Discs
- Jay and Silent Bob Get Old
Also worth listening to (if the humour is to your taste) but finished - AIOTM, plus Richard Herring also did a daily podcast show at Edinburgh, good mix of interviews and guest standup, and 25+ hours of listening there.