I don't know if anyone has any insight into this, but I picked up Halo Reach on release day and wasn't able to play a few levels of campaign/firefight. I get the error disc unreadable, so I bring the disc back to the store get a new one and guess what, it's still disc unreadable.
So does...
Saw it, loved it, same as Clak, not many people in the theater either only like 8 others and I saw it on saturday (day after release) at a pretty reasonable time.
Favorite part was