getting used to clipless pedals...
My LBS had this piece of advice for me when I got SPD pedals: Stay in one spot (i.e. one foot on the ground) and just clip in and out about 20 times, repeat on the other side! It helped me a lot (no, I don't have the GUTS to use on the MTB yet either, but I do like them for road riding!)
Another tip I read in a mountain biking book was regarding stopping: unclip one foot a little early, once that foot is out, turn the front wheel toward that foot when you stop. That way, if you end up stopping before the other foot is out, the bike will naturally want to lean toward the foot that's already out!
Another tip from a really good cycling buddy was (duh!!
) unclip before you get to the light!
All who joy would win must share it -- happiness was born a twin. (Byron)