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All Killer No Filler is the debut album by Canadian punk rock band Sum 41, released in 2001. The album was a commercial success, selling over 10 million copies worldwide and spawning several hit singles, including "Fat Lip" and "In Too Deep." The album's fast-paced, energetic sound and catchy melodies helped to establish Sum 41 as one of the most popular punk rock bands of the early 2000s.