Mike had this small audio do-dad (I have no idea what it was) and passed it around to the folks in the first row for them to contribute musically.
The Mound that ended incomplete and then picked up to start the second set was a highlight for me. They were obviously having fun this night. Scott gets the credit for bringing about the Mound Reprise later in the set.
Also, Mike mentions that the fancy bracelet you see him wearing these days was picked up in Flagstaff the previous day. He got it stuck on his shirt and then commented on it's purchase.
It's been awhile since the show so I can't really remember standout jams or anything but a fun night in a fun room. The second encore came as a surprise to many there.