For anyone who knows Chinese or is learning it, check out nciku.
This is by far the best Chinese/English dictionary I've seen online, because instead of having to look up words by stroke number (the traditional method) or pinyin (not useful if you don't know how it's pronounced), you can just draw it in a little box, and then pick the one you want from a list that populates as you draw. Neat, huh?
I noticed there are lots of neat tools for learning Chinese, like a conversation of the day section, a stroke-order section, faqs, etc.
Right now I am making up characters to see what comes up. :)