I missed it. I'm ashamed of it, but there's no sense trying to hide it. Yesterday was the two year anniversary of Dave Winer's inaugural podcast episode called Audio Morning Coffee Notes.
For the unitiated, Dave Winer and Adam Curry are "the podfathers". I'm sure there's more to it than this, but in essense Curry had the idea and Dave wrote the RSS enclosure element that allowed it to happen. Rumour has it that they're not speaking now, but that was then and this is now.