Wanted to mention a great thread that I've found...

http://www.flyertalk.com/forum/showthread.php?t=366319

This suggests that Nikko is a good day trip.

The original poster (PresRDC) suggests that Kyoto is too far. Can anyone elaborate?

What about other worthwhile destinations -- either as daytrip or a more of a circle trip (with hotel nights out of Tokyo?)

Thanks so much!