X-Ray vision: for checking out what the other gender Jedi were hiding under their robes. Banned by Yoda (something to do with small-man's complex).
Super-Complaino-Power: the ability to complain one's way out of any tough situation (see Luke Skywalker)
Insect Repellant: ability to generate an insect repelling force field
Rejection Perception: ability to see if opposite gender will reject or accept a dinner date proposal before the proposal is made (this way, the studly line, "you could use a good kiss," would be met with something other than, "I'd just as soon kiss a wookiee."
Coffee Warming Power: ability to warm a cup of coffee with hands (or other small snack items sorta like a microwave).
Ability-to-see-sith-coming-out-of-thousand-year-hiding-and-start-taking-over -galaxy-power: (see TPM)
Ewok-Exploding-Power: deemed too close to the good side/bad side borderline for universal use.
Nookie-stamina-increasing-power: really tried on this one, ladies, and is still in development today. requires lots of practice with a willing partner...
Extra-sensory-clitoral-proximity-locating-power: (goes with three) 'been trying for THOUSANDS of years on this one, ladies, and haven't given up yet, rest assured. Your urgent requests have kept it at #2 again. It remains one of the great mysteries of the Galaxy. In fact, its probably because so much jedi mental resource was being used to develop this power that #4 failed. Could be, you never know! Stop throwing stuff at me!
and the #1 failed Force Power:
Bad-joke-protection: (see eps 1, 2, 4, 5, 6, and THIS LIST)