8. "Last Friday Night (T.G.I.F.)"
Released: June 6, 2011
Chart Peak: Number One (Two weeks)
The tune's a straight-up teen fantasy of naughty rule-breaking fun, and the video's an age-appropriate fit, with "Kathy Beth Terry" receiving a makeover and achieving popularity and featuring cameos from teen stars of various eras, including Rebecca Black, Corey Feldman, Hanson and Debbie Gibson. Oh, and also Kenny G – even he must have been a teen once, right?