The Big Bang Theory, 30 Rock, American Idol

The Big Bang Theory, 8 p.m., CBS
It’s May, which means we are headed to sweeps week stunts and season/series finales. If you’ve been noticing a trend here lately of separation between Leonard and Sheldon, then good for you. Pay close attention to what happens between now and the season finale in a couple of weeks. It’s going to be good.

30 Rock, 10 p.m., NBC
Speaking of trending toward a season finale – I am going to be sad if Elizabeth Banks is gone from 30 Rock for good – I love that character and her and Jack together are a complete crack-up.

American Idol, 8 p.m., Fox
Tonight, JLo lip syncs her hit single with PitBull, our favorite rapper du jour, and Jacob goes home. Right, Jacob?