Ween performed the song "The Rainbow" on Chef Aid: The South Park Album. They also appeared in the accompanying mockumentary, Chef Aid: Behind the Menu, in which they talked about Chef's influence on their career.
- Trey Parker and Matt Stone directed a music video for the song "Even if You Don't" from the White Pepper album.
- Trey and Matt's band DVDA was the opening band for Ween on several occasions during 1999 through 2000 era.
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