re: You know you are a geek when.....
I've been to two SF conventions here in KC. I beat the Star Trek officianados, groupies, etc. etc. on a trivia quiz. One question was about how many actors had had more than one role in the original ST. I could not believe that no one realized the Commander of the Romulan Bird of Prey in Balance of Terror was the same actor who later became Spock's father, Sarek. Heeheeheeheee. I practically had all the episodes memorized line for line.