Mummelmann on 25 February 2011
1: d21lewis; he is one funny bastard and seems like a really reflected guy.
2: madskillz; always liked him and his perfect mix of merry and sour! 
Plus I have his facebook and him and his family seem like lovely people!
3: naznatips; such fervor, authority and reasoning skills on the forums. He has to be awesome in real life!
4: Metallicube; I've had quite a few debates with this guy, he's always to the point and never gets personal and lends some interesting angles and views to my own that I may not have considered.
5: darth/carl; a tie for fifth, they seem like fun chaps and they have (mostly) excellent taste in games and consoles...
There are a ton of others as well, these are just off of the top of my head right now.
