Reshevsky.
Masters who liked, or were very good with knights?

Chigorin was famous for preffering knights.
Tschigorin also, who had a brief chess career but abandoned it when everyone confused him with Chigorin.

Petrosian is a classic one lol - he sometimes prefers Knights over Rooks - thus the sacrifice exchange.

There was a recent Womens match, on the home page that both players used their knights exceptionally well. It is very instructive, and a beautiful game, it reminds me of dancing knights, all 4 knights are involved in very intricate and coordinated attacks, and parries, maybe the game should even be called the Tango/Flamingo knights.
i dont know if he liked knight, but Reti against ALekhine. Wow you have to see it was like knight tango

I tried to copy and paste the game but it messed up. Its under Ukraine extends lead in womens Championship, under SonofPearl's blog on the home page, its listed as The candidates but on the right side of that it lists the different info on the Womens championship. Its the 2nd game, and A. Ushenina is playing black which also wins the game. She is playing against Anda Safranska. In case anyone is interested in the game.
I've heard the names of a few masters who really liked using knights (or preferred them over bishops), but have forgotten them. Does anybody know?