McEnroe - intensity and artistry
Muster - intensity and intensity
Chris Evert (well, not so much playing a lower ranked player on clay - but watching how she played Navratilova when she was actually outgunnned)
Rosewall and Laver - I'll always remember those WCT finals
Agassi - watching him move his opponent back and forth like a pendulum
Borg is mythologized and he truly was one of the greats (his French and Wimbledon combos are one of the great achievements in tennis), but watching him play was often incredibly boring.
Last edited by NLBwell : 07-30-2012 at 08:32 PM.