1UP Yours, The 1UP Show, Full Moon Show, and Kojima Productions report. That's all you need. IGN's Podcast beyond is ok, haven't listened to it in a while though.
They are (on average) shorter then most of the other podcasts mentioned and they are close to having a new one everyday making for good bedtime listening. Of course I'll admit that I'm a bit biased since my MP3 player fast fowards so slowly that I can never just stop in the middle of GFW or 1upYours and listen to something else.
Everyone needs to download the newer podcasts so they keep coming! Alt-Tab (pc), Gear, and Movies.