Considering how well How to Train Your Dragon has been doing ($44 million opening weekend, $211 mill to date), it's no wonder that the fourth installment in the popular Shrek franchise, Shrek Forever After would do even better. After all, it has dragons and overweight cats! Adorable! That, a lack of kid-friendly competition and the money-printing combo of IMAX and 3-D helped Shrek go medieval on the box office and earn $71 million, and although that's less than the last two Shrek films did in their opening weekends, it was still enough to knock Iron Man 2's knight in shining armor out of the top spot. However, since the armored Avenger has made a quarter-billion in the U.S. and one and a half-bill world wide in only three weeks, we won't feel too sorry for him.