I have all of Sum 41's Cd's: Half Hour of Power, All Killer No Filler, Does This Look Infected?, Chuck, Underclass Hero, and their latest release Screaming Bloody Murder. But this is the classic that even the casual Sum 41 fan should own, with classics like Fat Lip and In Too Deep. Those two tracks are just the headlining act because this album is truly All Killer No Filler, every song is catchy and kicks buttocks!