I'd do tile for the bathroom floors. Laminate flooring doesn't like water too much. There's no way to seal the joints and the mdf core absorbes water and just blows apart. Linoleum is still a durable inexpesive option as well.

If you do tile, go the extra little bit and put the electric grid in the floor. Tile is cold on the feet just out of the shower. <img src="http://www.catsailor.com/forums/images/graemlins/blush.gif" alt="" />