I've been lucky enough to meet a fair few through work but the stand-outs (good and bad) were:
Gok Wan - spent the day travelling round Yorkshire on a coach with him, an absolute hoot and lots of fun.
Jenson Button. Lovely, open, friendly (and gorgeous).

David Cameron. Um, yeah. Says a lot without really saying anything.... In the real world he'd be instantly forgettable. :

Princess Anne. I'm not a royalist at all but I was massively impressed; I hosted her at an event while working for a charity of which she is patron and after speaking to people once she remembered all their names for the farewell line-up. (And no, nobody was whispering in her ear!)
David Jason. Possibly the biggest disappointment as I was always such a fan. Superficial prima donna and up his own whatsit. I was gutted.
