Start with the Comic Book Podcast wiki and add these.
PoP! cast
Princesscast 
Stupid Yellow Costume: A Daredevil podcast
2099 Bitmapped
Paperkeg West
Probably Comics
Journey into Mystery
Geekscape
4 Color News and Brews
Flavourful Reviews  vid
Unboxing Wednesdays  vid
Stadium Comics Presents: Previews Reviews  vid
The Death of Comics
SNIKT!
BKBN Comic Reviews  vid
Two Dimension comic book podcast
Laydeez Do Podcasts
Not Young Just Us!

Start with the Comic Book Podcast wiki and add these.


The Smallville Chronicles: A Superboy podcast
This week in Marvel
Weekly Manga Update
The Weekly Dose
Stashmycomics.com
Empire's Open
Cold Slither podcast 
The Packrat show
Comic Bastards
Scotch and Comics
The Mostly Mellow Popculture podcast
Pulp Faction: Comics in Australia
This Week in Marvel
Well Watchers