I have not met Oscar but I did sit next to Ernesto for a while during a tournament while his son was playing. I always have my son with me in those places since he loves pool and this has helped a lot with meeting and getting to know players a bit since I like introducing him to players and they are easy to meet anyway, but having a younger kid helps
Ernesto was great, easy to chat with. Mike Dechaine is local to me and he also hangs out with my son quite a bit, not a bad guy to talk to and we text back and forth at times.
I had the pleasure of sitting next to Nick Varner a bit at the Jr Nationals in KY this past year and he was very friendly, one of my idols and was great to meet him. Archer was there also although I met him a few times, he's a nice guy as well.
Karen Corr, very nice with the kids, talks almost like fan herself about the game about strategy and pointers.
One person I don't think I seen mentioned is Grady Mathews. I think of all the players and even people I ever met, he was the most caring. I met him once in early 2000 and even after just meeting me for a few minutes, every time he ran into me that tournament he treated me like I was an old buddy of his that he knew for 10 years. It's too bad I only met hime that one time.
Sigel was also nice, met him during his promotion tour for his league and he spend a bit of time with my son (again, helps having a kid around LOL), talked a bit about some shots and ofcourse how great he was/is LOL
I have to say most players I met have been very nice. There are a few that are a lot harder to approach, Earl of course, and I can't really think of anyone else.
Met Shane several times and he's always doing something with someone, he was one of only a few players doing stuff with the kids in Vegas, along with Dechaine, Lombardo and Jen Baretta when they had Jr Nationals along side the older open CSI event.