Themes is the easy part for me...quitting coming up with ideas is a little harder :p
LOST (yes, the tv show)
Asian theme- esp geisha, konji, and fans,
Japanese anime-esp Sailor Moon and Sargent Frog and Soul Eater,
video games- esp Mario stuff, Gears of War, and any of the Lego games
Lilo and Stitch- esp Scrump! And Stitch!
I could go on, but my ADD kicked in