Easily Pacquiao at welterweight, Jones Jr, Tyson, and Martinez. I love their styles and they were exciting, borderline explosive, fighting at their primes.
I'd also say Muhammad Ali during his first Liston fight. He wasn't as refined or gritty, but he definitely had a flair to him that I haven't seen since in the heavyweight division.
Edit: I forgot to include Jones.
Last edited by Augustane; 01-23-2013 at 06:03 AM.