If you are anything like me -- and you are -- you watched Galaxy Quest at least four times this weekend. You already know that it is commonly referred to as "the greatest Star Trek film of all time," that Takei loved it despite initial misgivings, that Tony Shaloub's stoner subplot was imperfectly cut to get a PG rating, and that David Mamet (!) thinks it's one of the most structurally perfect movies ever made. You've read…