If you're claustrophobic and can't intone through the confessional window, there's the always-accessible portal at Absolution-Online. Though it's not officially endorsed by The Church, it's quite easy to navigate, although it comes with a disclaimer that insists you contact your priest if you're uncomfortable with the service. If you aren't Catholic, or if you prefer to sublimate your venial sins into collage, you know you can always contribute to the beautiful index at PostSecret...if you haven't already.