Title: Out of This World (Leinster book)
Content:  Out of This World is a collection of three related science fiction stories by Murray Leinster, published by Avalon Books in 1958. The stories, all featuring "hillbilly polymath" Bud Gregory, originally appeared in Thrilling Wonder Stories over a four-month span in 1947, and are sometimes characterized as a novel. A fourth story in the Gregory sequence, "The Seven Temporary Moons", was published in TWS in 1948, but has never been collected. All the stories originally carried the "William Fitzgerald" byline (a derivative of Leinster's birthname, Will F. Jenkins).
Title: Out of This World (Watt-Evans novel)
Content:  Out of This World (1993) is the first fantasy novel in The Worlds of Shadow trilogy by Lawrence Watt-Evans.
Title: Out of This World (musical)
Content:  Out of This World is a musical with music and lyrics by Cole Porter, and the book by Dwight Taylor and Reginald Lawrence. The show, an adaptation of Plautus' comedy Amphitryon, first opened on Broadway in 1950.
Title: Out of This World (British TV series)
Content:  Out of This World is a British science fiction anthology television series made by the ITV franchise ABC Television for ITV.  It was broadcast on ITV in 1962. A spin-off from the Armchair Theatre anthology series, each episode was introduced by the actor Boris Karloff. Many of the episodes were adaptations of stories by science fiction writers including Isaac Asimov, Philip K. Dick and Clifford D. Simak. The series is described by the British Film Institute as a precursor to the BBC science fiction anthology series Out of the Unknown, which was produced by Out of This World creator Irene Shubik after she left ABC.
Title: Out of This World (Pepper Adams Donald Byrd Quintet album)
Content:  Out of This World is an album by the Pepper Adams Donald Byrd Quintet. The album features the recording debut of pianist Herbie Hancock.
Title: Out of This World (Watt-Evans novel)
Content: Out of This World (1993) ; In the Empire of Shadow (1995) ; The Reign of the Brown Magician (1996) The Worlds of Shadow series: 
Title: Out of This World (Teddy Edwards album)
Content:  Out of This World is an album by saxophonist Teddy Edwards recorded in Denmark in 1980 for the SteepleChase label. The 1995 CD reissue added an additional track.
Title: A World Out of Time
Content:  A World Out of Time is a science fiction novel by Larry Niven and published in 1976. It is set outside the Known Space universe of many of Niven's stories, but is otherwise fairly representative of his 1970s hard science fiction novels. The main part of the novel was originally serialized in Galaxy magazine as "Children of the State"; another part was originally published as the short story "Rammer". A World Out of Time placed fifth in the annual Locus Poll in 1977.
Title: Out of This World (British TV series)
Content:  most intelligent and best written of its genre since Quatermass" while The Times said, "in general the level of writing and direction has been encouragingly high [...] Out of This World may well help to banish forever the view of the summer as a time when just anything will do". H. F. Hall, writing in the Yorkshire Evening Post, described Out of This World as "the most accomplished thing of its kind that TV has yet produced... well schemed scripting and disciplined production". One viewer who enjoyed the series was Goon Michael Bentine who sent a telegram to Leonard White conveying "joyous congratulations for wonderful entertainment".
Title: Out of This World (Maureen McGovern album)
Content:  Out of This World is Maureen McGovern's ninth studio album (and first in four years), released in 1996. This is a cover album of 16 songs that were written or co-written by Harold Arlen. The third track is a two-song medley, and the twelfth track is a three-song medley. The album was reissued in November 2003 with two bonus tracks: "Let's Fall in Love" and "Optimistic Voices".

Question: Who is the author of Out of This World?
Answer: Lawrence Watt-Evans.