i found this really cool thing today. you can create 3-D images without having the glasses, just go cross eyed.
all you need to do is cross your eyes so the images overlap, then focus. its pretty awesome. here are some of my favorite pics:
the following link contains a bunch of other ones that are the same way. TOTALLY COOL!
http://www.flickr.com/photos/3dphoto/sets/72157594292395441/