I noticed the calendar feature too...pretty nice. If you are an iTunes user you can get a nice plugin, iConcertCal, that goes through your iTunes database and then scours a number of online databases of shows (Jambase, The List and Tour Filter) to generate a nice calendar of shows based on bands that you have in your collecion. I find it cool when a show pops up for a band I didn't even remember I owned any music from!