There were some extensive flooring disussions here in the past year or so. Try a search for Pergo or laminate.
My mother just bought some on sale, but we haven't installed it yet. My cousin just laid a few hundred square feet and is very happy so far, but it is still very new. He even put it in a small 3/4 bathroom since he had enough left over and was so good at laying it in that he figures he can easily replace it if it gets too wet.
My big concern is that the warranties don't cover standing water which is generally defined as water sitting over 30 minutes. I don't know what happens, but it is a concern. One brand boasted treated wood that was moisture resistant. Other than standing water they are apparently indestructible...or at least people talk that way.
EDIT: The foam backing I've seen claims it's multi-purpose. It prevents moisture from seeping through the concrete to the fooring, and I guess the other purposes are softness or quiet and something else which I forget.