Intentional or not, these are the funniest videos of the lot. (Insert marginally amusing Bob Saget reference here.)

Geometry Parody Uptown Funk

(Parody of "Uptown Funk" by Mark Ronson, featuring Bruno Mars)

Reid Pannell, Robert Macias, and Andy Santiesteban

E.T. Geometry Parody

(Parody of "E.T." by Katy Perry)

Meredith Wilder, Brandon Richards, and Sydney Lovick

Isometry God

(Parody of "Rap God" by Eminem NSFW)

Kolbe Simmons, Zach MacDonald, Josh Mansell, featuring Jefferson Knight

Transforming Stars

(Parody of "Counting Stars" by OneRepublic)

Raegan Stubblefield, Hanna Brown, and Anna Laura Harmjanz