Burt Reynolds is Batman
Tried it in highschool and didn't really stick with it. Too much pressure and the kids in my improv class were in a totally different league than my nervous, high-strung, unfunny self was.
I like to think as a laid-back hilarious adult I'd be much better at it, but don't expect to see me out at an improv competition near you.
So nowadays I stick to stuff like old episodes ofWho's Line is It, Anyway? and newer ish like Blouzefest.
Hell, those dudes sing their improv. I could never do that.