My dd just went to Sundance film festival. I actually don't think they saw any of the films, but did eat at Robert Redford's restaurant. And as luck would have it, sat at the table right next to him. They took pictures with their cell phones (without flash) to prove it. When he left he "winked" at them. Their server asked how they liked sitting next to "Bob"?
Years ago when I was going to school in Hawaii, a group of us went out to the Kahala Hilton. It was very exclusive at the time. Dolphins in the pools on the grounds. My friend accidently tripped Helen Reddy in gift shop. We all got a good chuckle out of that.
While I don't think much of the Hollywood celebrity thing...(we all put our pants on one leg at a time). It is fun to see them "out and about"!
Who have you brushed into?