Hmm...Let's see..Does Manga count? If it did, I wouldn't mind meeting Eiri Yuki from the Gravitation Series, (And giving him a piece of my mind!)
Now, back to reality, I would like to meet Jacob Black (He is such a nice person!), Edward Cullen (Grr....), and Emmett Cullen (yay!).
From the Inheritance Cycle, the person I would like to meet the most would be Murtagh, Eragon's half brother. I also hope he would consider passing his archery skills on to me, as I have had zero talent since I joined the club.
From H2O:Just add water (Are there any books?) I would like to meet Zane, and put him in his place for once. (Though Rikki already does that very well herself!)
From Harry Potter, My first choice would Be Professor Severus Snape, of course, as he has been my favourite character the whole time. Dumbledore would definitely be next though...
I would also like to meet Marcus Brutus from Emperor, (wow!),
and I wouldn't mind meeting Romeo from Romeo and Juliet, even though he drives me nuts!
Ian Rider from Alex Rider series would have been cool too! (I just happen to have a strange liking towards people called Ian... I dunno why, and I have honestly never known anyone called Ian though)
I know this sounds very immature but I have been dying to meet Master Yoda from the Star Wars thing, ever since the books came out!

Oh damn, there are just too many to mention! I have no idea! I guess I would like to meet everybody from all the books I have ever read...okay, so maybe not EVERYBODY, definitely not Cluney the Scourge, but Slagar would be nice, hahaha...(Redwall)....and last of all, I would be more than honored to meet James the Vampire from Twilight....muahahah....unless you count Orochimaru, (Naruto Manga..long long time ago), who has managed to keep me interested for a long time....anyways, that's all I think!