by far one of the best free apps out there, iConcertCal (v2.1) integrates with your iTunes library as an alternative Visualizer:

presented as a calendar, iConcertCal informs you of upcoming shows based on your zip code. you can even adjust the mileage radius around your zip code if you’re willing to drive 75, 100, 150 miles to a good show? just the other day I realized that The Roots will hit The Palladium Ballroom on Oct 11. who knew?

what I really love is the CD Releases tab. week by week it lists new albums and even reissues, linked up to the respective Amazon page so you can get the low-down. just today I learned about several new discs coming out:

Sara Groves (Oct 21)
Snow Patrol (Oct 28)
Bruce Springsteen (Oct 28)
Rod y Gab (Oct 28)
Chris Cornell (Nov 4)

incredible. how did I ever survive without this?