Jon Hein

Jon Hein is the person who popularized the term "jumping the shark" and created the website jumptheshark.com. Hein has explained that he and some friends at the University of Michigan were discussing when popular television shows began to decline, and one mentioned "when Fonzie jumped the shark" on Happy Days. The phrase "jumped the shark" became code between Hein and his friends for the moment that a television show began to decline, and became inspiration for the name of the website. Due to the popularity of the website, the phrase became part of the American English lexicon, and indeed its meaning has broadened to indicate when anything entered a phase of decline. While developing and operating the website, Hein's day-job was as a Vice President for Marketing at the New York-based testing company The Princeton Review.

Due to the popularity of jumptheshark.com, Hein began making appearances on radio and television, most notably as a recurring guest on The Howard Stern Show. Hein was a lifelong fan of Stern's, and partially for that reason was chosen as the first host of the Superfan Roundtable in late 2005. The Roundtable is a weekly program on Sirius Satellite Radio's Howard 100 channel that discusses the issues, personalities, and events that have taken place on the Stern Show.

Master Tape Theatre has since moved to Howard 101 on Fridays, replaced on Howard 100 by the Best of the Week, a montage show with clips from the Monday through Thursday show. Hein hosts Best of the Week.