Question: Which band is known for its musical contributions to the TV series Jackass, CKY or Good Charlotte?
Related documents: [0]  [DOC] Good Charlotte is an American rock band from Waldorf, Maryland, that formed in 1996. Since 1998, the band's constant members have been lead vocalist Joel Madden, lead guitarist and backing vocalist Benji Madden, bassist Paul Thomas, rhythm guitarist and keyboardist Billy Martin, while drummer Dean Butterworth has been a member of the band since 2005. After a four-year-long hiatus, the band announced its comeback on November 3, 2015. The band has released six studio albums: "Good Charlotte" (2000), "The Young and the Hopeless" (2002), "The Chronicles of Life and Death" (2004), "Good Morning Revival" (2007), "Cardiology" (2010) and "Youth Authority" (2016), as well as two compilations: "Greatest Remixes" (2008) and "Greatest Hits" (2010). [END] 
[1]  [DOC] CKY is an American rock band from West Chester, Pennsylvania. Formed in 1998 by lead vocalist and guitarist Deron Miller, guitarist and backing vocalist Chad I Ginsburg, and drummer Jess Margera, the group currently features Ginsburg, Margera and bassist Matt Deis. Originally known by the full name Camp Kill Yourself, and later briefly credited as simply Camp, CKY found initial recognition through its musical contributions to the "CKY" video series and the TV series "Jackass", both of which featured Margera's brother Bam. The band self-released its debut album "Volume 1" in 1999, featuring a number of songs from the "CKY" videos. [END] 
Answer: 
CKY
CKY