Many celebrities host a talk show after they finish work on a television series, to change the direction of their career or to promote things they think are important. Many such series last only a season or two, and some even less. Actresses Gabrielle Carteris, Caroline Rhea and Megan Mullally each hosted short-lived talk shows, after leaving successful series. Nearly every show aired at the same time as "The Tonight Show" has been cancelled after a short run, including shows hosted by Chevy Chase and Dennis Miller. Arsenio Hall came close, with a show lasting five seasons. "Late Show with David Letterman" has been the most successful, and is still airing. (Ironically, David Letterman was a hopeful to take over "The Tonight Show" from Carson when he retired in 1992.)