- Defictionalization: When Joanie graduated from the University of California at Berkeley, the real Berkeley actually had her picture appear in the yearbook, and Trudeau himself got to give a speech at the graduation (as well as pick up her diploma).
- Alex Doonesbury appears in the real-life MIT email directory.
- Andy Lippincott had his own real patch in the AIDS quilt.
- Several Jimmy Thudpucker records were released on LP and 45, on Warner Bros and Windsong. He even has a Discogs page!
Trivia / Doonesbury