Don't you just hate it when that happens. Like ford truck guy said.
Aluminum is not a very forgiving material, once it has been bent it can't be worked like steel. Many times the damage can't be seen until the piece breaks.
One suggestion for your walk around, don't just look at stuff, touch it. You'll find storage compartment latches that didn't catch properly and other assorted things that need attention. It's a good idea to do the same thing with your tires, you'll catch the tire that is starting the bulge on the sidewall long before it is a problem.