- He was the owner of "Star Waggons, Inc.", the largest supplier of studio location rental trailers in the entertainment industry.
- He was the first Playgirl centerfold in June, 1973.
- He was considered for the role of Batman/Bruce Wayne on the 1960s TV series Batman (1966) and did a screen test along with Peter R.J. Deyell who was portraying Dick Grayson/Robin, but lost the role to Adam West.
- In 1974, he left The Carol Burnett Show (1967) under mutual agreement with the producer.
- In 1976, the Encino, California Chamber of Commerce appointed Waggoner "Mayor" of Encino. This is an honorary "goodwill ambassador" position. In addition to Waggoner, it has been held by other celebrities, including Steve Allen, Mike Connors, Fred Travalena, Ronnie Schell and Cesare Danova.
- He was unavailable for a cameo appearance in Wonder Woman (2017) due to his participation in the cast reunion of Carol Burnett's variety show. While Lyle performed as Steve Trevor (both Senior and Junior) throughout the 1970s television series of "Wonder Woman", its first season was set during World War II. The 2017 theatrical film is set during World War I.
- Before he became an actor, he was once a door-to-door encylopedia salesman.
- He was cremated at Valley Oaks Memorial Park in Westlake, California. His urn was given to his widow.
- Owned homes in Westlake Village (California) and Jackson Hole (Wyoming), as well as Manzanillo (Mexico).
- Son of Marie (Isern) and Myron Waggoner. He was of German descent.
- Son, Jason Waggoner, won "Today Throws a Wedding" on Today (1952) in September, 2006.
- Had two sons, Jason Waggoner and Beau Waggoner, and four grandchildren.
- His name was sarcastically mentioned in the "Bill Nye the Science Guy" episode "Populations".
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