Then again, it looks like it could be Haworthia attenuata.

Maybe pumila ? It looks like the leaves are pretty large far to large for any attenuata I've ever seen . I think H. fasciata is a good chance to . I have a small start of fasciata but the bumps arent as well developed as on yours. Try doing a search for pics of fasciata and pumila . And let me know when you're ready to let go of any pups LoL
hope that helped

here some image searches from yahoo
http://img.search.yahoo.com/search/images?ei=utf-8&fr=slv8-msgr&p=haworthia%20%20pumila

http://images.search.yahoo.com/search/images?p=haworthia++fasciata&ei=UTF-8&fr=slv8-msgr&x=wrt

looks more like pumila to me , and from the pictures I think even more so that it's a pumila , and I'd let that pup grow for a while yet , at least until it has a nice full rosette . Think you might want to do a trade fer that lil bugger? LoL pumila is one I really want and I can't seem to find it localy

Well, I guess I'll just have to go with H. fasciata...I haven't found H. pumila resembling mine.

Thanks for the input. ^^

On a genuine H. fasciata, the upper/interior leaf surfaces will have none of the sort of ridges, bumps or tubercles that are present on the lower/outer leaf surfaces. The interiors are smooth. H. attenuata almost always has at least a few bumps on the leaf interiors, as does your plant. As it happens, lots of H. attenuata plants are tagged and sold as H. fasciata-- it's a common mistake in the horticulture trade.
With those chubby leaves, it's not impossible your plant could have some pumila in it-- Haworthias hybridize very easily -- but I think attenuata'd be your best guess.