I can't name just three, but I'll list some of my all time favorites:

Felix Trinidad - (no explanations needed)

Alexis Arguello -
The best to come out of Nicaragua. He was a classic puncher-boxer, with tremendous power in his beautifully thrown right hands. Not only was he a joy to watch in the ring, but it was hard to find a classier individual outside the ring. A credit to boxing.

Marco Antonio Barrera -
True warrior cut in the classic Mexican mold. His demolition of Prince Naseem Hamed made me an instant fan for life.

Wilfredo Benitez -
In his peak, the "Radar of St. Just" brought a lot of glory to our little island of Puerto Rico. He was a defensive master, and the youngest world title holder at 17 years of age.

Thomas Hearns -
There weren't too many decisions in his fights. The guy was a walking highlight reel. He had classic fights with Leonard, Hagler, and a handful of other great fighters.

(pre-mental breakdown) Mike Tyson -
No fancy robes or kinky entrance music. Just an appetite for blood. I used to love (and cringe) when his left hooks lifted him off his feet. Couldn't go to the bathroom after the bell rang, or you'd miss the whole fight.

Miguel Cotto -
Still some mega fights in his future... but this guy is the real deal. He comes to fight. No trash-talking, no hot-dogging in the ring. Just pure, unadulterated violence. Another fighter who brings credit to our little island.

Ricardo "Finito" Lopez -
Awesome puncher from Mexico. Another unassuming, classy fighter.

Kelly Pavlik -
The type of fighter you can really rally around. Fearless, exciting, and a hard puncher. He's another warrior who I think has even greater days ahead of him. I also like the fact that he's a humble guy.

I'm sure I've forgotten a few, but those are some of my favorites, past and present.