Star Trek II and Monty Python - Spock's Death (http://www.youtube.com/watch?v=KLcc26-Mzac&feature=related#)
PYTHON TREK (http://www.youtube.com/watch?v=R9PGcnM10lA&feature=fvw#)
Possibly the funniest Trek parodies I've seen. Or at least the best done.