I can confirm that at the 4:09 mark, my face melted at this show...
Phish 6-11-2010 Toyota Park (Chicago burbs)
Cliff note: This was at the end of the song GHOST, where it turns into one long jam. At 1:10, I was grooving around with a bunch of friends <who were all a total mess> and at 4:09, when that affect kicked in, I just completely puddled into the ground from whatever I was taking at the time.