After last year's experiment with a free show, 2008's Ozzfest will be a single day event. The show will be headlined by Ozzy Osbourne and Metallica and feature Serj Tankian (System of a Down), Hellyeah, Jonathan Davis (Korn), Cavalera Conspiracy, Shadows Fall, Apocalyptica and In This Moment.

The conversion of a touring festival into a single event is not without precedent. The annual Lollapalooza festival in Chicago began life as a tour before turning into a weekend event in a single city.