I was an extra on Hell on Wheels when I was like 15 and I got to meet Common which was fricken awesome. I got a nose bleed on set and he asked me if I was alright.
Also when I was 9-10 I was an extra on a movie with Matthew Perry and during a break he shot a basketball around with us kids.
According to my mom I met Bill Cosby when I was a baby and he said I had "star potential". Yeah, safe to say his prediction didn't come true
Oh and one more: Brett and Owen Hart went to my high school and I live up the hill from the Hart house.