As so often happens, the readers of this blog are smarter than I am. The question asking which comedian/actor went to Santa Ana College actually had two answers -- a blogfan who calls himself Mr Trifecta submitted Diane Keaton and regular O's commenter Andrew went with Will Ferrell.
I was looking for Ferrell, who stopped by SAC on his way to the big time on Saturday Night Live and a new movie about once every two weeks. Keaton spent part of her youth in Santa Ana, but she didn't pop into my mind because I don't think of her as a comedian, despite all the Woody Allen movies. My bad.
Of course, the reason the whole thing popped into my mind was because Jim Palmer mentioned that Kris Medlen went to Santa Ana College and it sparked my fond memory of a semester there when I was 17 and had graduated a semester early from high school. The place was called Santa Ana Junior College then. We high school slackers used to call it UCSB -- the University of California at Seventeeth and Bristol (Streets).