(3.7 megabyte AVI video file)

The Guest of Honor concert on Saturday night. Terrence Chua sings the chorus of a Cthulu-themed Abba parody.

Kathleen Sloan leads the audience in the proper pantomime, involving using your fingers to simulate tentacles dangling from your chin.

Yes, adults do this.

Come on, I saw an arena of several thousand do the 'YMCA' dance, and this is so much more clever than that.