I am a big fan of the podcast. It's like someone invented TV and radio all over again. Here are a few of my favorites. Also, check out the poker podcasts on my poker page.

Audio Podcasts

Coverville
iTunes New Music Tuesday
The Official LOST Podcast
this WEEK in TECH
Trash Talk
Wil Wheaton
The Word Nerds
Your Mac Life


Video Podcasts

Ask A Ninja
GeekBrief.TV
Photoshop TV
Rocketboom
ScreenCastsOnline Video Podcast - iPod Edition