Suggestions for distros?

I love trying out distributions that I've never tried before. I'm in the middle of downloading DragonLinux (any of you use that one yet?) and looking into Ark and Icepick. Any other suggestions for good small distros? I've already used most of the big ones (RedHat, Suse, Mandrake and the like) and I'd like to check out some of the lesser-known or new ones. Any suggestions would be great.