The Rev. Doc. Della Reese Lett, better known as "Della Reese," is an American actress, singer, game show panelist of the 1970s, one-time talk-show hostess and ordained minister. She started her career in the 1950s as a gospel, pop and jazz singer, scoring a hit with her 1959 single "Don't You Know?". In the late 1960s, she had hosted her own talk show, Della, which ran for 197 episodes. Through four decades of acting, she is best known for playing Tess, the lead role on the 1994-2003 television show Touched by an Angel. In more recent times, she became an ordained New Thought minister in the Understanding Principles for Better Living Church in Los Angeles, California.