Federer is pretty ridiculous. He's now won 7 of 9 Grand Slams and 9 of 13. He has made the finals in the past 9 GS and made at least the semis in all of those 13.
I was really impressed with Nadal today. He played Fed point for point on a surface that Fed has dominated.
Edberg vs Becker and Sampras vs Agassi were some great rivals i watched growing up, and this one looks to be good for the next few years.