Psych
10 pm USA
Nestor Carbonell (Lost) guest stars in a multi-episode arc as a criminal profiler with real talents. Shawn tries to expose him as a fraud, without success. Shawn and Gus also have a tough case looking for a killer who’s linked to liver donors on a transplant list. Tears for Fears’ Curt Smith also guest stars and plays the opening theme.

Top Chef
10 pm Bravo
The seventh season of the Emmy-winning show begins to wind down. The group is tasked with creating  delicious space-food creations. The winner’s dish will actually eb served in space too. Buzz Aldrin also makes an appearance. Culinary magazine editor Dana Cowin and Anthony Bourdain are tonight’s guest judges.

CMA Music Festival: Country’s Night to Rock
8 pm ABC
Alan Jackson, Brad Paisley, Reba McEntire, Keith Urban, Rascal Flatts, and Taylor Swift all participate in this four-day celebration of country music.  Kid Rock, Uncle Kracker, Darius Rucker, the Zac Brown Band, Kellie Pickler and Carrie Underwood also perform. Tim McGraw hosts the special.

America’s Got Talent
9 pm NBC
Only a few weeks away form the finale on September 15, the variety show is finally hitting its stride. Only five victorious acts will advance to the top 10, which already consists of a ballroom-dance team and four singing acts.