I thought we were supposed to list only one, sorry.
I saw Stan Musiel's last game played in Texas. Watched James Street play baseball and football. Saw Wooster and Bertlesen play. (Bertlesen always claimed that he could read a beer can at 50 yards before a game. He was a riot.) Sat on the 50 when Ricky broke the record. It was awesome.
I loved watching Earl run. The combination of power and grace he possessed is something that is not often seen. My Dad loved watching Earl, as well, but he never stopped talking about Bobby Layne & Tommy Nobis. I don't remember seeing them play. Too young.
I saw Kevin Durant, TJ Ford, Earl Thomas, Derrick Johnson, Ross, Vasher, Huff, all the DBU guys.
I've also seen some great gymnasts in person. As athletes, female gymnasts reach their peak at 16-18 years of age. They have a narrow window that doesn't allow for screw-ups. They are some of the greatest, mentally tough athletes I have ever witnessed. If you don't believe it, try performing on a 4 inch wide beam, performing aerial stunts with grace, no breaks, and no falls. At the same time, exhibit strength, flexibility, and dance training. Then dismount, without giving up a 10th of a point by nailing the landing, usually blind, while twisting and turning, with your success or failure (and that of your team) depending on the performance. That, my friends, is an athlete.
A group of kids I knew were convinced that men invented balance beams and panty hose.