On this day in 1993, Late Show with David Letterman—which offered an innovative and frequently off-the-wall approach to the talk show format—debuted on CBS; Letterman’s previous show, Late Night with David Letterman (1982–93), had aired on NBC. The first episode featured guests Bill Murray and Billy Joel, setting the tone for what would become a hallmark of irreverent and unpredictable late-night television. Interestingly, Bill Murray was also the first guest on Letterman’s Late Night debut in 1