I collect all Hall of Fame players and all the players who should've or could've gone to the Hall. That's a lot of players. I have the most cards of Ken Griffey Jr. (over 2300 different) followed by ARod (over 2100 different) and then Barry Bonds (over 1850 different). I have over 1000 different cards of 20 different players. The most of any HOFer is Cal Ripken Jr. (over 1300 different) followed by Tony Gwynn (over 1200 different) then Nolan Ryan (over 1100 different). I only collect cards. My favorite players to collect are Griffey, Pujols and Yastrzemski.
My Huge Wantlist: http://www.zeprock.com/WantList.html