Dashboard Confessional (MySpace) is one of the better emo groups, which has a great sound courtesy of lead singer Chris Carrabba who sings with great anguish.
They have been around for more than eight years, releasing their debut album The Swiss Army Romance in 2000. This was followed by another four albums, with the latest The Shade of Poison Trees released last year. I still think their best work is Dusk and Summer.
album cover for Dusk and Summer
album cover for The Shade of Poison Trees
clip for 'Don't Wait' from Dusk and Summer
live clip for 'Stolen' from Dusk and Summer
As with most emo music, listening to it depends on mood.