At that age my son really liked a book called Just One More Swim. It is about a polar bear teaching her cubs to swim. The unabridged version is much better than the abridged version.
Off Go Their Engines, Off Go Their Lights is a nice vehicle bedtime book for younger kids. Fewer words than Good Night Good Night Construction Site but similar idea.
For kids very comfortable with the food chain, One Small Place by the Sea and One Small Place in a Tree are nice.
Kids who like Magnetic Mighty Minds may also like Block Buddies.
Oh, if you have a vehicle loving child, Hop Aboard! is the best Richard Scarry book I have seen. It doesn't really have much in the way of stories, just page after page of detailed drawings of vehicles with a short sentence about a boy and his dog Flip... My son can spend a long time just staring at the pages.
