Wheel of Fortune is an American television game show created by Merv Griffin. Contestants compete to solve word puzzles, similar to those used in Hangman, to win cash and prizes determined by spinning a giant carnival wheel. The show originally aired from 1975 to 1991 as a network daytime program; the current nighttime syndicated version premiered on September 19, 1983. The program debuted on January 6, 1975, on NBC, replacing the original version of Jeopardy!. Chuck Woolery and Susan Stafford hosted and Charlie O'Donnell was the program's announcer. O'Donnell left in 1980, Woolery in 1981 and Stafford in 1982; they were replaced, respectively, by Jack Clark, Pat Sajak, and Vanna White. M.G. Kelly took over briefly as announcer after Clark died in 1988. O'Donnell returned in 1989 and remained until his death in 2010, when Jim Thornton replaced him. Sajak left the daytime version in January 1989 to host the late-night talk show The Pat Sajak Show.
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