William Petersen and Nicole Sullivan by Michael Yarish/CBS
Cheers to CSI for taking a ride on the wild side. CBS' drama took a detour off the Sin City strip to probe a string of murders related to the Las Vegas rodeo. The episode rounded up a posse of rootin'-tootin' guests, including Jewel (singing the National Anthem), real-life cowboy-toy Ty Murray, outlaw offspring Shooter Jennings and sitcom vets Nicole Sullivan and Julie Brown. Not to mention a barroom full of catfighting cowgirls. Plus, the script was educational: Who knew there was such a thing as "semen rustling"? Yee-haw!

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