Have you ever stumbled across a celebrity in your daily life? Was it more or less exciting than you would have expected? Do you have any interest in meeting media stars?
Assuming deliberately meeting celebs at conventions doesn't count, my only "daily life" encounter that I recall was mammallamadevil and I leaving an Office Depot just as Colin Powell was coming in.
Given that no words were exchanged nor doors held in either direction, it was a pretty dull encounter.
As for meeting media stars, I've met a fair number over the years. Some have been great, some have been jerks. They's just people. :)