What am I missing?

The other day I was watching the exhibition match featuring Roger Federer and Pete Sampras;
I was impressed with the frequency of Sampras attacking at the net and the beauty of his volleys. Although I knew Sampras was a serve and volley player this was the first time I was really watching him.

Usually beginners and amateur players like myself tend to imitate their favorite players.
There are great servers on the tour to learn from, great one handed backhands to watch, great baseline sluggers but perhaps we are missing a great volleyer to learn from.