My list is of current people still on this server.
Guardian / Jugg - Liscil - Hands down has to be the best one on this server.
Sent / Marauder - Wrecks - I do not like him focusing me... at all. But, he's a great player.
Shadow / Assassin - Hamis - I love his tanking ability.. ^.^ He is great on every job that he plays though.
Scoundrel / Operative - Sev'row & Bullitt - These are two Operatives that I do not like seeing working together as a team. They are a pain in the butt. Not looking forward to 2.6 because of these two.
Vanguard / Powertech - Jordo - He's a pain in huttball with his firepulls. >=O!
Sage / Sorc - This is a hard one... But, if I had to pick one.. It would be Ennya.
I know I forgot the Commando/Merc category.. But, I can't remember some of their names.