I've met a few famous people but it's always been gay small-talk and shit. Not really anything special. The time I (sorta) had ice-cream with Bill Laimbeer was cool, though.
I saw dude at the Cold Stone in midtown Manhattan a few years ago and mentioned this b.s. packing factory about 10 minutes outside of Detroit that he owned back in the mid-90's. I made some stupid joke about knowing him from his shipping career, and not what he did in basketball. Then I asked he'd mind autographing some basketball-shipping materials for my little cousins. He got a kick out of that and paid for my ice-cream.
Dude was a monster back in the day.