We caught up with Jonathan Coulton after he participated in a live taping of the Heather Gold show, an experience he blogged as well, without noting the more relevant details -- he sang a duet of Harvey Danger's "Flagpole Sitta" with Gold reading the lyrics from an iPhone and then sang Billy Joel's "Don't Ask Me Why" with Harvey Danger's Sean Nelson. We had a couple minutes (before running out of hard drive space)......