I like the idea of mixing the hash symbol with a b. I'm not a good digital artist, but check this out:

If you can't see the hash, I highlighted it in this one:

It's very easy to write, and looks good. Just draw a 3 and 2 lines through the top. I got the idea from this post:
http://forum.bitcoin.org/index.php?topic=25102.msg325489#msg325489
I like this, I was hoping for something that doesn't have anything to do with letters of alphabet or keyboard. But I like this because it's meaningful, hashing plays an important role with bitcoins.
If people really want a symbol based on writing, maybe we could also use an alternate symbol based on Kanji. I don't know if Satoshi would mind this. Personally I like to stay away from my nationality, but maybe he is not the same.