Great collection of just about every "Star Trek" related video that Robot Chicken has done. I'll post the main link below and a couple right to the videos:
http://trekmovie.com/2011/07/16/robot-chicken-producer-star-trek-not-expansive-enough-for-special-but-more-trek-sketches-soon/ (http://trekmovie.com/2011/07/16/robot-chicken-producer-star-trek-not-expansive-enough-for-special-but-more-trek-sketches-soon/)
http://video.adultswim.com/robot-chicken/sci-fi-con-fight.html?cid=vplayer_robot-chicken_sci-fi-con-fight (http://video.adultswim.com/robot-chicken/sci-fi-con-fight.html?cid=vplayer_robot-chicken_sci-fi-con-fight)
http://video.adultswim.com/robot-chicken/star-trek-experience.html?cid=vplayer_robot-chicken_star-trek-experience (http://video.adultswim.com/robot-chicken/star-trek-experience.html?cid=vplayer_robot-chicken_star-trek-experience)
funny! Le Wrath di Khan is my favorite. :)