Article continues below advertisementJimmy Kimmel delivered his most difficult monologue yet following the devastating death of his late best friend Cleto Escobedo III.The comedian, 57, broke down in tears during a heartfelt tribute to his childhood pal - who died at age 59 less than 24 hours before the Tuesday, November 11, episode of Jimmy Kimmel Live!.In addition to being one of Kimmel's closest friends, Escobedo also served as the late-night show's bandleader alongside his father - who still appeared to play the saxophone during Tuesday's show despite losing his son.