I love to both play and watch tennis. The Australian Open, French Open, and now Wimbledon Open, all have had some very exciting matches.
Admittedly, tennis is a much more interesting game when you are an active player, as I have been recreationally for over 15 years. It's a good team sport (I mostly play doubles), and it is a fun game, which men and women can play together (I play mixed doubles with my wife).
ADG