Twelve Helmets Pictures
"12 Unusual and Creative Helmets"
"Collection of creative motorcycle helmets and unusual helmet designs from all over the world...."
Starting from the Skull Helmet, all the way to the Valentino Rossi Face Helmet (in the picture), this is fun: I think even for people who aren't 'into' motorcycles.
There's a Star Wars Storm Trooper helmet, and a Darth Vader helmet, of course.
My favorite, in terms of combining 'cute' and 'bizarre,' is the watermelon helmet: