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.[2][3] 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.