AC/DC remain reluctant to anthologize their music in anything resembling a greatest-hits collection but they're perfectly willing to repackage those old tunes as soundtracks, whether it's in the form of Who Made Who for Stephen King's sleazo exploitation Maximum Overdrive or in the mega-blockbuster Iron Man 2. Who Made Who had an appealing low-rent quality, but Iron Man 2 is a big-budget collection of oft-played AC/DC staples. A bunch of biggies are here -- "Back in Black," "If You Want Blood (You've Got It)," "Let There Be Rock," "Highway to Hell," "T.N.T." -- but just as many are missing, replaced by aggro album tracks. Macho is the name of the game here, with all the band's cheerfully dirty ditties -- "Big Balls," "Whole Lotta Rosie," "You Shook Me All Night Long," etc -- being kept by the wayside, which does make sense for a soundtrack for a film that favors explosions over Scarlett Johansson in form-fitting leather. And so be it -- this is good guts-and-guitar music.