I mainly was in Himeji for most of the trip, but we went out sightseeing every single day to other cities. Off the top of my head, I went to Fukuoka (saw a baseball game there), Hiroshima, Miyajima, Tokyo, Kyoto, Okayama, Kobe, and Awaji Island.
http://www.talksox.com/forum/general-off-topic-chat/12073-anyone-ever-been-japan.html
And yeah, I loved it everywhere. Great country. What were you doing over there?