AceShowbiz, IMDB and Wikipedia all provide lists of movies starring Tom Selleck. According to Wikipedia and AceShowbiz, Selleck has starred in some 50 films, while IMDB lists approximately 100.
AceShowbiz lists both TV and film roles, and it notes which movies were made for TV. It also indicates the name of Selleck’s characters. The site includes approximately 50 movies starring Tom Selleck, from his movie debut in 1970's “The Movie Murderer” to his work in the 2010s.
Wikipedia provides a table that lists Selleck’s roles. It also shows Selleck’s characters and the genre of the movies in which he appeared. IMDB breaks down movies into TV movie and feature film categories. The site lists almost 70 TV movies for the actor, including the “Jesse Stone” series that debuted in 2005. As of 2015, Selleck has starred in 25 feature films.