Me:
-I once saw Jesse Jackson at Pappas' Seafood in Houston. He was obviously there with his friends, and I had to make my family leave him alone. I'm a strong believer in not bothering famous people when they're trying to have lunch.
-When I was visiting Texas A/M as a National Merit Finalist, they took us all to a "Presidential Dinner" before the Kansas State football game. Former President George H.W. Bush (the current Bush's father) was there, about 30 feet away from me, and he gave a little speech. Robert Gates (Secretary of Defense) gave a speech too, and then Texas Governor Rick Perry. Later in the dinner, Perry actually came to our table, shook hands with us, and talked with us some. That was really awesome.
-I know and live near several astronauts. For instance,
Lisa Nowak lives right down the street from me.
Other people:
-When my dad was in the military, he was presented an award by Ronald Reagan. That was 25 or so years ago.
-My dad also ran into Fred Thompson at the airport once, and Thompson gave a little speech to the crowd. I think my dad still has a video of it saved on his phone. That was while he was "not sure" he would run for President.
-My dad was friends with Ann Coulter's fiance (one of many) in law school, and knew her personally. They still trade emails sometimes.
-When President Bush (the one currently in office) came to NASA after the Columbia disaster, my mom stood really close to Bush. I think they shook hands also.
EDIT: I just realized all of the famous people I've met are politicians xD