On TV tonight
The Big Bang Theory, 8 p.m., CBS Howard's wedding may be ruined when NASA reschedules his mission. That's one heck of an excuse, right there.
The Secret Circle, 9 p.m., CW Adam ruins prom by uncloaking a crystal hidden in the school. He obviously didn't heed the dress code.
The First 48, 9 p.m., A&E A Dallas detective thinks a missing car has the clues he needs to solve a homicide. Too bad it's missing then, huh?
Parks and Recreation, 9:30 p.m., NBC Leslie spends the last day of her campaign on a bus tour. Wait, Modern Family already did the Election Day tour thing this season.
— Joshua Gillin [email protected]