Crystal Method"s Legion of Boom lives up to its title, dropping blasts of thumping samples, catchy riffs, and dependable grooves. But as with previous records like 2001"s Tweekend, a chaotic, industrial darkness lurks around the edges that has little in common with the sheen of commercial dance. Many still compare Ken Jordan and Scott Kirkland to the Chemical Brothers and their Big Beat, arena-pleaser cousins. But Boom sounds more like Nitzer Ebb in a good mood, or an angst-free Front 242. The duo has invited another batch of touchy-feely artists to contribute, like those noted softies Wes Borland and John Garcia, formerly of Limp Bizkit and Kyuss, respectively. Don"t think for a second they aren"t all having a blast, mixing in big, dumb hair metal with abandon. Most fun of all is the boost singer/actress Milla Jovovich gives to "I Know It"s You," weaving her tweaked voice through a forest of tangled keyboards. With its bombastic techno-jams, Legion of Boom definitely makes for a tasty party record. Just keep the lights down as low as the bass end if you really want to capture the mood. --Matthew Cooke