recs for Japan?

I haven't mentioned it here, but a number of you know that my brother and I are Japan trippin' this August! I'm looking for recs for places to see/foods to eat/things to do, approximately on the following schedule, so if there are any must-sees you can think of, lay 'em on me. For you Japan-side folks, if you're around these parts at these times and you wouldn't mind a quick meal/whatever with me (and my awkward but well-meaning brother), I'd love to meet up. :D

Here's what our schedule looks like, because my brother is much more ambitious about getting around to everywhere than I think is realistic:

AUGUST

09 (R) - arrive Thursday night

10-11 (F-S) - Tokyo

12 (Su) - Nagoya

13-14 (M-T) - Kyoto

15-16 (W-R) - Osaka

17 (F) - Hiroshima

18 (S) - Yokohama/Tokyo

19-20 (Su-M) - Tokyo, depart Monday afternoon

Let me know what's up where. :3