Not many. You got the plant, paint splats, the weapons/items (ammo, barrels, etc.), the pong ball, and old flag models (I think they are the old ones at least). If you want any more you have to make them yourself. Oh, and if you want to use the player model, like in my
Ice Man thing, copy/paste everything over to the "\pball\models" directory so you don't get the "You're using modified content" warning.