I just happened to come across these fitted caps. I should post it in the clothes thread but why not here.
Hulk
http://www.neweracap.com/hulk/
The white cap looks great
DC Comics
http://www.neweracap.com/eshophtml/eshop/searchResults.cfm?collection=752
Marvel Comics
http://www.neweracap.com/eshophtml/eshop/searchResults.cfm?collection=750
The Blue Cap Am fitted looks awesome I have to get it.