Primetime Preview

Simon Cowell's new reality show American Inventor gets another chance to establish an audience, since CBS is still covering March Madness. (Frankly, it mostly demonstrates how hard these shows really are to do well.) There's a new Earl (but a repeat of The Office), a new Everybody Hates Chris and a new The OC, not that anyone is watching anymore. If you're wondering what all the fuss is about over Disney TV's High School Musical, it's being rerun tonight at 8 p.m.