Akihabara is alright, but a little overrated. It's kind of toned down since there was a murder there a few years back. Lots of Dragon Quest stuff there though >_>
Unless you wanna get harassed by big nigerian bouncers, avoid Roppongi at night.
Do: Check out Meiji Shrine. It's beautiful.
Check out Tokyo Tower at night. If I recall, it's only 500 yen to visit the top observation deck.
Shibuya, Shinjuku, Ikebukuro are all nice.
Tokyo is awesome. This time of year its pretty neat because its brown and stuff.
I'm trying to find a blog of when I was in Japan a few years back.
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"Don't freeze up girl, you're looking quite a sight." - Adam Ant.
"Baby, can you dig your man? He's a righteous man." - Larry Underwood