One of my favorite podcasts is the 1Up show. It's a funny and entertaining show that these writers make every week or two about the video games they play and review. It's really quite good and much more entertaining then a lot of regular t.v. shows. I'm a big fan and watch every episode. Some of the writers/characters are really funny. You may be surprised how good it is. Check it out.
You can download it via iTunes, watch it on the website, or download the higher quality movie file by control clicking on your Mac and choosing "Save As" to your desktop. I really like it. I thought the Wii Fit section was really funny. Older shows are funny too!
Here's the link