When I asked Tyler a few weeks ago what he wanted to be for halloween, he said "a pirate!".  Now, I really don't think he actually understood what I was asking (I don't think he remembers Halloween from last year), but the answer seemed appropriate so we decided to go with it.  My friend Tina's son had a pirate costume that he lent to us, and it worked out great!  He looked so cute dressed up as the pirate, and he ran around telling everyone "I'm a pirate!  arrrrg!" :)