Boo! is the fifth studio album by the band Was (Not Was). It was released in 2008, their first new album since 1990. The cover illustration is by David Was. In 2023, an expanded edition was released with two bonus tracks.
All tracks composed by David Was and Don Was, except where indicated.
- "Semi-Interesting Week" – 4:49
- "It's a Miracle" – 4:40
- "Your Luck Won't Last" – 3:28
- "From the Head to the Heart" – 4:15
- "Big Black Hole" – 4:47
- "Needletooth" – 2:14
- "Forget Everything" – 5:16
- "Crazy Water" – 4:48
- "Mr. Alice Doesn't Live Here Anymore" (Bob Dylan, David Was, Don Was) – 4:05
- "Green Pills in the Dresser" – 3:11
- "Party Party Marty" (Expanded Edition only) - 3:55
- "Somebody's Dead In New York" (Expanded Edition only) - 5:05
- Ruby Marchand – A&R
- David Was – producer, cover illustration
- Don Was – producer, engineer, mixing, graphic design
- Rik Pekkonen – engineer, mixing
- Krish Sharma – engineer, mixing
- Dan Bosworth – assistant engineer
- Kevin Mills – assistant engineer
- Louie Teran – mastering at Marcussen Mastering (Hollywood, California)
- Jamie Hoyt-Vitale – package design
- Ron Meckler – graphic design
- Ellen Stone – band photography
- Jamie Muhoberac – club photography
- Nancy Scibilla – management
- Ron Stone – management