^ Ah yes Big L is pretty good. I'd put Cormega in my list too.

The Game
Ya Boy
Traxamillion/San Quinn (Bay Area rappers)
Dre
Nas
Lil Boosie
Old Weezy
Mike Jones
Ice Cube
NWA

stumbled upon this gem on youtube..

in no particular order:
Rakim
Nas
Lupe Fiasco
Jay Z
Eminem
Masta Ace
Ghostface Killah
Tupac
Notorious BIG
Black Thought

Eminem is so overrated...

Eminem is one of the best rappers of all time I don't know what you're talking about.

to think that big boi wants to run for mayor of atlanta..haha

Eminem was much better when he was still underground rapper. Even when he became mainstream he was pretty good. Now he's just lost it for me.

"Best" rappers is such a general term. Hard to say the who's best as there is no true definition but some of my favorite lyricists:

Andre 3000 (#1 pick by far)
J Cole
Eminem
Nas
Big L
Big Pun
Lupe Fiasco
Jay-Z ( not so much recently)
Crooked I
Joel Ortiz
Jay Electronica (just started listening to him)

immortal technique
eminem
ludacris
pac
eazy-e
t.i
snoop
game
ice cube
young buck