Was having a good laugh thinking of some of mine and also interested to hear others' experiences.
Went on one once with a man who turned up 45 minutes late without good reason (I had just left him a voicemail saying that I was leaving) when he walked in.
Looked much older than his pictures, refused to tell me his age when I asked him and instead started banging on about 'objectivity and subjectivity' and sat extremely close to me. I had an 'emergency' and left.
Another one told me at the start of our date "oh btw, I'm moving to Australia next month", talked constantly about himself, was incredibly cagey about what he did for work and where he lived, started talking about his "wife", then claimed it was an ex and that they were never married but that he referred to her as his wife.
Then suddenly remembered he had "forgotten" to pay for a belt the day before so could we go and pay for it, so we had to get a bus there and on the way he seemed to know absolutely everybody so we had to keep stopping. I left, then got a random text from him 2 weeks later asking if i preferred classical or hip hop music?
Another one who turned up in a suit for most dates including the cinema, smoked Camel cigarettes and absolutely reeked of them, I told him that I taught English to unemployed people and for some reason he found this hilarious and laughed hysterically.
Quite interesting experiences 
Would love to hear other stories.