What TV shows we should watch tonight

A. Isaac Senior Editor

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NBC

It’s Friday night and there’s not much going on but here are our recommendations for what you should watch.

U.S. Olympic Trials @ 8pm, NBC: Nastia Liukin, Alicia Sacramone and Jordyn Wieber look to solidify the U.S. gymnastics squad.

X Games @ 9pm, ESPN: Finals of the skateboard and Moto X.

20/20 @ 9pm, ABC: An in-depth look at the 2001 murder of millionaire Ted Ammon.

Late Show with David Letterman @ 11:30pm, CBS: The always entertaining Bill Murray makes an appearance.

Whale Wars @ 9pm, Animal Planet: What will these bumbling idiots do this week?