From the Eels website:

The DVD for Shrek 2 has a special feature about the film’s music that includes some clips from the recording of the EELS track “I Need Some Sleep,” as well as comments from E, David Bowie, and others who did music for the film. Children around the world can be heard screaming for their mommies when EELS bassist Koool G Murder appears on screen. The DVD to this little-seen film is sure to be an obscure and hard to find collector’s item.