Will Smith
The  SpongeBob SquarePants Theme Song  is the song that is sung at the beginning of every SpongeBob SquarePants episode by Painty and a group of kids. The theme song “Those Were the Days” was sung by Archie and Edith Bunker, as played by Carol O’Connor and Jean Stapleton. While you may not believe it from this performance, Jean Stapleton was actually a very accomplished singer. Although the show was a spin-off from the sitcom Maude (1972), there were no actual references to that show or its characters. On that series, Florida was employed as Maude Findlay's housekeeper in suburban New York and her husband Henry was employed as a firefighter. The Fairly OddParents! Theme Song is the song that plays as the intro of the whole show with the exception of the Jimmy Timmy Power Hour trilogy (instead this theme and the Jimmy Neutron theme are used as a medley) and  A Fairly Odd Movie: Grow Up, Timmy Turner! . Firefly Joss Whedon Sings Theme Song Joss Whedon, creator of Firefly, not only wrote the Ballad of Serenity, he sang and played guitar on a preliminary version of it to convey his personal take on the theme song. Everyone knows Will Smith sang the theme song to The Fresh Prince of Bel-Air, and Reba McEntire's vocals are obviously hers when you listen to her show's theme. There were four renditions of the theme song. Initially, B.J. Thomas sang it solo. Later, a track recorded by Dusty Springfield was overlaid to create a duet. Springfield's track was replaced by Jennifer Warnes version following her successful duet with Bill Medley on the Dirty Dancing (1987) soundtrack. 2,499 pages on this wiki. The  Adventure Time Theme Song  and opening title sequence features all of the main characters and also some of the minor characters. The theme is sung and played by series creator Pendleton Ward. It has the same lyrics as the animated short but there are some slight variations.
http://spongebob.wikia.com/wiki/SpongeBob_SquarePants_Theme_Song http://www.the-culture-counter.com/singing-their-song-tv-actors-who-perform-their-own-theme-tunes/ http://www.imdb.com/title/tt0070991/trivia http://fairlyoddparents.wikia.com/wiki/The_Fairly_OddParents!_Theme_Song http://www.sciencechannel.com/tv-shows/firefly/videos/firefly-joss-whedon-sings-theme-song/ http://mentalfloss.com/article/55010/11-tv-theme-songs-not-so-obviously-sung-star http://www.imdb.com/title/tt0088527/trivia http://adventuretime.wikia.com/wiki/Adventure_Time_Theme_Song
tv character who sang the opening theme song