Producing episodes of The ShopTalk Show is a lot of fun because Chris and Dave have so much fun recording their popular web design/development podcast.
You may want to argue whether U2 is the greatest band of the last 100 years or the greatest band of all time, but you can't argue about whether The @U2 Podcast has an amazing worldwide audience of U2 fans that tune in each week to live stream broadcasts or download the episodes later.
The Non-Breaking Space Show is where Chris Enns cut his podcast production baby teeth - working with Christopher Schmitt to record, edit, and produce an interesting and quality interview with the smartest folks in the web design industry.