Actually, I'll do you one better than simply telling you that I subscribe: I'll tell you which podcasts I subscribe to.
DS:Life
ESPN 1st and 15
IGN Games
KFI Tech Guy
MacBreak Weekly
Profootballtalk.com Weekly Podcast
Rush 24/7 Podcast
New Adventures of the GAFcast
This Week in Tech
WSJ's Your Money Matters
They're all listed on iTunes, Profootballtalk.com and Rush 24/7 excepted. Look 'em up.
But those don't seem to be amateur podcasts. Text blogs are very popular but the audio versions seemed to have flopped. Maybe it is because people prefer to READ the blogs rather than hear them.