What was the worst family movie you had saw with your kids? Why?

Well, they're not MY kids. They're my goddaughters, but we've seen some lousy movies! Gnomeo and Juliet really was like watching Shakespeare next to some of these. Bad ones include Monsters vs Aliens, The Cat in the Hat (with Mike Myers and Parish Hilton!?!?), and Open Season, but the worst HAS to be Follow That Bird. Talk about mind-numbing!