Skillet

Apropos to their name, husband and wife hard rockers John and Korey Cooper, joined by Ben Kasica on guitar and Lori Peters on drums, have spent their first five albums throwing all things rock into a pan and seeing what cooks up the best. Techno, thrash metal, grunge, even an excursion into acoustic alternative went into the mix, but the constants have been their strong spiritual lyrics, challenging themes, musical boldness and their worshipful willingness to experiment. It's been that sense of fearless unpredictability that keeps the charts and the "Panheads" -- as their fans dub themselves -- satisfied.