I enjoyed Crystal Skull about as much as the other Indiana Jones installments, i.e. it was an okay movie, good for an evening of entertainment. I don't get why people complain about it so much, it's not like the other Indy films were any more realistic or had better writing.

I know too well that knowing too much (or at least knowing more than the authors or the expected audience of something) can ruin a work of entertainment. For that matter, I find it extremely hard to suspend my disbelief for any episode of CSI.