Southpaw right hook is trickier... Pac is an obvious choice for the speed, power and effectiveness of his right.

Michael Moorer deserves mention too, I think he was naturally right handed so he had an absolute wrecking ball of a right hook.

I know Hagler had dynamite in his right hook but I can't remember him throwing a whole lot of them off the top of my head.

I guess Sergio Martinez belongs in the discussion too.

Winky Wright had a great right hook to the body.