By the way, when I said I own 2001 on every home format it was released on, I do mean every home format it was released on. I do own it on CED. To my knowledge, it is fully functional, but having never owned a CED player, I don't know. (I bought it for $1 at a clearance sale to complete my collection soon after I got the Blu-Ray.)
A local role playing game store had a bunch (a few hundred) CEDs for sale a couple yeras ago - I don't know why they had them (I'm guessing the owner had them,) but I picked up a few purely for curiosity's sake. Most were $1, some were $2.