Unsolved Mysteries is a television series which began as a series of specials in 1987 and then ran from 1988 to 2002 as hosted by Robert Stack, with a brief revival series from 2008-2010. As the title implied, the show examined and re-enacted mysteries, ranging from unsolved crimes or disappearances to supernatural or unexplained phenomena.
- In the second season Dinosaurs episode "The Last Temptation of Ethyl," a Robert Stack Dinosaur appears as host of Mysteries That Haven't Been Solved Yet. The near-death experience of Ethyl Phillips becomes the show's newest mystery.
- In the third season Dinosaurs episode "Network Genius," one of the new test pattern-themed series on the proposed schedule is Unsolved Test Patterns.