I can't watch it anymore, I don't have cable. I used to like:

The Rock (When he was a bad guy in the Nation of Domination)
Mick Foley/Cactus Jack/Mankind/Dude Love
Ric Flair (Wooo!)
Matt Hardy
Eddie Guerrero
Kurt Angle
Vampiro (remember him?)
Chris Benoit (Angle/Benoit at the Royal Rumble was immense)
The Dudley Boyz
Kane
Undertaker
Shane McMahon (Shane O'Mac is a legend)
Booker T

And those are just recent ones. If I push it back, theres Ultimate Warrior, Ricky the Dragon Steamboat, Hacksaw Jim Duggan, Dustin Rhodes, Sting.

But my favourite of all time, and probably forever will be, Bret "Hitman" Hart. The Best there is, the best there was, and the best there ever will be. Never were truer words spoken in a wrestling ring. B)

Oh and Vince McMahon is a legend as well.