i've been using wordpress as the portal to ubb.threads and specifically woothemes themes..
they just came out with a calendar theme that would be good to take ideas from (at the very least)http://www.woothemes.com/demo/?name=diarise
very nice demo.. i just grabbed their theme and am playing around with the calendar features.. those features would be nice to emulate..
1 feature i find cool is the add to calendar popup
AJAX popup to add to the 3 most popular calendars.. nice!