Here are a bunch of wallpapers to choose from. The links in the name take you to the post that introduces the wallpaper - you can find the wallpaper-sized images there.
Jalberto: Richard Jefferson (black)
Jalberto: Richard Jefferson (blue)
Hirschof: Warning: Blair Rebounding
Jalberto: Just Tim Time
Jalberto: The Rookie That Rocks
Jalberto: Here He Comes
Jalberto: Signature
BlaseE: Manu Warm Up
BlaseE: From Under the Radar
Dariusz: Polaroid Spurs
sleep research facility: The Drive For Five
Hipuks: Roger Mason
Hirschof: Vitruvian Manu
BlaseE: Dismantle Opponents. Build Titles.
LatinD: DeJuan "Rebound Demon" Blair.
Jalberto: Spurs Calendar