If you're going to blow your hands off tonight you may as well know the science behind it.
The class of 2012 at North Penn High School celebrated their graduation with a little more than the usual Pomp and Circumstance: student band String Theory performed a medley of twelve pop songs, one from each year they were in school. If you don't recognize each one right away, you will when the audience joins in.
Apparently someone let Andy Samberg speak at Harvard's graduation. Included in the 20 minutes are impressions of Mark Wahlberg and Nicolas Cage, Samberg finding out that he in fact is not getting an honorary degree for speaking, and every mom (and dad) in the audience being collectively hit on at once.