At least wait for the price to drop. Those things are so crazy expensive right now. You also need a special 3D DVD/BlueRay player, and I'm not sure, but I think only special made for 3D DVD's even play in 3D. If that is the case, I'd wait for more of those to start hitting the shelves too.
Best investment for those who bought a PS3 for a BD player... 3D upgradeable.