Nothing will match Navratilova/Evert encounters. I know it's a different era, but just because they were such opposites on every level I found their matches very exciting.
Gabriela Sabatini=Part ballerina dancer, part boxer. A really graceful player with every shot in the book except her serve. Even her serve was beautiful to watch in a tragic poetic way.
Evonne Goolagong=Moved like a feline on court.
Matina Hingis=Graceful strokes and she had an amazing vision of the court.
navratilova all around. she had the ability to attack really well, which made her game very exciting to watch. but henin's point construction and shot making ability also put me at the edge of my seat.