Since forming in 1991, Incubus has become one of the rare bands to appeal to a truly diverse fan base. Though they started out as rap-rock group, they gradually progressed to the point where their energy and volume attract metalheads; the funk elements and sinewy live presentation give the jam community plenty to love; the DJ scratches and beats bring in the dance crowds; and the DIY approach and relentless road ethic appeal to indie-rockers. Tonight's show celebrates the 20th anniversary of its major label debut. (Niesel)