I was planning to say a little about his game and what makes his special but after reading a few of the negative reviews attached, I think I will address those who don't really know much about the man, the player or the game itself. For someone to say Agassi is arrogant or sucks or isn't nice doesn't know much about him. I played Agassi when I was playing college tennis in San Diego. I was 20 years old and he was 14. He beat me in straight sets and I knew he was going to be great. The fact that he is only one of a rare few to win on all four majors on all four surfaces speaks for itself. I also happen to know Brad Gilbert (married a friends sister) and I know Agassi through him. Agassi is one of the nicest guys you'll meet. He stays after his matches and signs autographs for kids, sometimes for a couple of hours. Early in his career he had long hair and wore flouresant spandex. So what! I had long hair and wore a Rush t-shirt. Does that make me suck?? Agassi also gives alot to charity and alot to kids.
Something I'm sure those negative reviewers below don't do. I guess Theodore Roosevelt had it righ when he stated:

"It is not the critic who counts: not the man who points out how the strong man stumbles or where the doer of deeds could have done better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood, who strives valiantly, who errs and comes up short again and again, because there is no effort without error or shortcoming, but who knows the great enthusiasms, the great devotions, who spends himself for a worthy cause; who, at the best, knows, in the end, the triumph of high achievement, and who, at the worst, if he fails, at least he fails while daring greatly, so that his place shall never be with those cold and timid souls who knew neither victory nor defeat."

Agassi will always be one of the greatest on and off the court.