I've met more Trek/sci-fi people I can count, at conventions and such, but I won't count most of them. Nor will I count a bunch of my Facebook friends, such as Johnny Depp and Julie Andrews. However, since I've never met any of them personally, they don't count.
However, I've gotten quite familiar (Not in a nasty way!) with Herbert Jefferson Jr. from the original Battlestar Galactica. When I see him at conventions, he greets me by name, asks about my kids whom he's met. Hell of a nice guy, and an absolute gentleman.
But to say we are good pals would be a real exageration.
I also went to high school with Cuba Gooding Jr. However, although he knew friends of mine in the theater department, we only met once in that time, and if he ever heard my name today, he'd probably ask "SBK Who?"