I worked on exhibitions for years (I'm an electrician) and so talked to and met a lot of stars. Me and my work-friend made a point of talking to them to see how they reacted.
So I will list only the unusual ones.
Sam Fox and Nina Carter topless; Sam fox gave me a signed photo 5 times, she didnt see me re-queing up.
Noel Edmunds (Ingnorant get) I said hello Noel twice as he was passing. First time he just raised his eyebrows, second time absolutely nothing. He definitely heard me say 'shortarse' as he had passed though.
Henry Cooper play sparred with me after I thought I had broken the silver lady thing off the front of a Rolls Royce. I hadn't - it just dissapeared inside the bonnet when I leant on it.
Don't know her name now but she was the beautiful blonde one from Hot Gossip. I asked her for a date between her dancing sets. She smiled at my nerve and then told me she was going out with Floyd (a black dancer in Hot Gossip)
Lional Blair bollocked me for turning the power off to the stand he was appearing on (I had no choice) So I made him wait an hour longer than needed before it was restored.