1. Diggnation This would be on G4 as their late-show, if G4 didn’t blow.

2. T.W.I.T. This Week in Tech. When Dvorak is on, you’re going to be entertained .

3. PC Gamer Put out by PC Gamer Mag. A group of older gaming journos. Hilarious when tech editior Logan Decker is on, he’s a real standout.

4. CNET Cartech Podcast Short, and includes an on-road review along with developments in mobile electronics.

5. Futures in Biotech Great if you actually wanna learn something. Developments in medical science with some of the very top minds in their fields. World changing stuff here folks. DNA replicators anyone?

All of these can easily be found by searching the Podcast Directory at Itunes.
(List updated as these shows Shineth or Sucketh)