Latin Music USA 9 p.m., Channel 2
This four-part series, covering salsa, Tejano, and reggaeton, among many other genres, “makes a startling case that its subject matter has been ignored for far too long,’’ wrote my colleague James Reed. Tonight: Latin jazz, mambo, and the cha-cha. Pictured: Gloria Estefan.
The Rachel Zoe Project 10 p.m., Bravo
OMG. I really need for you to listen right now. It’s really bad. OMG. I swear to you, I can’t breathe. Literally, I’m about to hit the ceiling. The second season of “The Rachel Zoe Project’’ is ending tonight, and I have a few friends who are going into deep mourning.
Californication 10 p.m., Showtime
The series has evolved into a flat-out sex comedy, and a pretty shallow one at that. The plot involving Kathleen Turner as Charlie Runkle’s lewd, sex-addicted boss isn’t as funny as it’s supposed to be.
Gossip Girl 9 p.m., Channel 56
Sonic Youth performs. Now that’s star power.
Trauma 9 p.m., Channel 7
A shooting spree, a hostage situation, and thou.
Ultimate Cake Off 10 p.m., TLC
Go frost yourself.
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