I've seen some serious omissions from most of these lists so far, so here's mine.
1) Chris Paul - straight up pimp
2) Deron Williams - takes over, does it all
3) Chauncey Billups - strokes 3's, physical
4) Steve Nash - when healthy no one makes their team better, even with horrible D
5) Jose Calderon - true point guard, never turns it over
6) Devin Harris - slasher, good defender
7) Jason Kidd - still gets it done, clutch
8) Monta Ellis - crazy fast scorer, if he shoots better gonna be a stud
9) Rajon Rondo - on any night can explode in pts, rbs, stls, asts...needs to learn to shoot more than layups
10) Baron Davis - extremely physical, can take over games still
11) Gilbert Arenas - streaky. when he's on, 40pts, when he's off 12TOs
12) Mo Williams - Shoot 3's, get it to LeBron
13) Tony Parker - FAST. hurt a lot, put up better numbers on shittier team. Sexy Wife
14) Jameer Nelson - only seen one real good half season out of him, lots of potential
15) Derrick Rose - decent all year, was awesome in playoffs, still young will move up a lot