Books in Humor
- The Big U
- Once Upon a Cool Motorcycle Dude
- Once Upon a Cool Motorcycle Dude
- Salmon of Doubt: Hitchhiking the Galaxy One Last Time
- Salmon of Doubt: Hitchhiking the Galaxy One Last Time
- Douglas Adams's Starship Titanic
- The Salmon of Doubt (Dirk Gently #3)
- The Long Dark Tea-Time of the Soul (Dirk Gently #2)
- Job: A Comedy of Justice
- On Beyond Zebra!
- The Ultimate Hitchhiker's Guide (Hitchhiker's Guide to the Galaxy #1-5)
- The Hitchhiker's Guide to the Galaxy (Hitchhiker's Guide to the Galaxy #1)
- The Hitchhiker's Guide to the Galaxy (Hitchhiker's Guide to the Galaxy #1)
- The Hitchhiker's Guide to the Galaxy (Hitchhiker's Guide to the Galaxy #1)
- The Ultimate Hitchhiker's Guide to the Galaxy (Hitchhiker's Guide to the Galaxy #1-5)
- The Ultimate Hitchhiker's Guide: Five Complete Novels and One Story (Hitchhiker's Guide to the Galaxy #1-5)