Met a bunch at weigh-ins 10+ years ago before they attracted thousands of fans.
Corey Hill (RIP) was chill as hell. Super nice and sociable guy. He was hanging out with the fans and chatting.
I saw Mark Coleman in the crowd during one of the weigh-ins. Nobody went up to him. I approached him and we spoke for a few minutes. Very nice guy and humble as hell.
Dominick Cruz was awesome. Great conversationalist and talkative.
Pat Barry is hilarious. Was telling stories like we were all sitting around a campfire. Can't remember what the hell he said but he's legitimately funny.
Jim Miller is a super nice dude, also. Took his time speaking with everyone. Very appreciative and humble.
I've met others (GSP, Nate, Hughes, Ninja Rua, Guida, Gonzaga (barely spoke English), Marcus Davis, some I can't remember), and they've all been pleasant, but nothing stands out about them.