The answer: Hanson. Of course. On a webcast following Conan's show in Tulsa.
I recorded the live stream. (Apologies for the video stutters that came from the source feed.) Hear Conan spill all the details on the art of autographing boobs, and his undying love of the jackalope.
Expect Jay Leno to steal this idea and record a hard-hitting sitdown with Aqua any day now.