Collision Course is a mash-up EP from American rapper Jay-Z and American rock band Linkin Park, released on November 30, 2004, by Roc-A-Fella, Machine Shop, Warner Bros. and Def Jam. From Linkin Park's catalog, Collision Course features three songs from Meteora and four from Hybrid Theory. From Jay-Z's catalog, it features three songs from The Black Album, one from Vol. 3... Life and Times of S. Carter, one from Vol. 2... Hard Knock Life and one from The Blueprint. Before the album, Jay-Z had released collaborations with The Roots and R. Kelly, and Linkin Park had collaborated with various artists on their remix album Reanimation.

The album was inspired by The Grey Album by Danger Mouse, which was a mash-up album between Jay-Z and The Beatles. MTV had originally planned on mashing up only one or two songs, but the project was eventually expanded to a six-song album. The production on the album was mostly handled by Mike Shinoda and Jay-Z, and it was recorded between July 16 and July 19. The album spawned one single, "Numb/Encore" which won Best Rap/Sung Collaboration at the 48th Grammy Awards. The album received generally mixed reviews from music critics but despite that was a commercial success. It debuted at number one on the US Billboard 200 chart, selling 368,000 copies in its first week.

Due to its short running time at 21:18, with six tracks in total included on the disc, the release has been identified as an EP. All of the tracks included are mashups combining songs by both artists.

The DVD contains behind-the-scenes new footage of the making of the album, as well as the second take of all of the Collision Course songs at The Roxy Theatre on July 18, 2004. Also included are the five scenes from the concert shown on MTV Ultimate Mash-Ups and a picture gallery.

The first single released from the EP, "Numb/Encore", achieved significant airplay on the charts, and stayed on six months after its release. "Points of Authority/99 Problems/One Step Closer" was also released to the radio in the US, but was never featured on the Billboard Charts – the videos for both that track and "Jigga What/Faint" were also seen on Kerrang! in the UK. "Izzo/In the End" was also heavily promoted on the official Linkin Park websites.

"This is so fun! This whole project is, like, fun!"

Mike Shinoda revealed that he would be mashing up with Jay-Z for a record under MTV's Mash Ups show.

The network allowed Jay-Z to choose a group or artist for the mash-up. Jay contacted Shinoda, who began experimenting with mixing the tracks before sending some examples to him. As a result, Jay-Z began working with Shinoda through email. The two decided that instead of combining the existing tracks for the live performance on MTV, they wanted to re-work and re-record parts of the songs to make them fit better. Shinoda explains, "Jay and I realized it's better to re-perform the rap vocals if you're gonna do it to a new beat because the vibe changes and you have to deliver your verse a little differently." Shinoda asked his bandmates to re-record instrumental and vocal tracks as well, and ultimately both parties decided they wanted to release the studio tracks. The entire album was put together within four days.