The 2007 HBO documentary about him, Mr. Warmth: The Don Rickles Project, won a Primetime Emmy for Individual Performance in a Variety or Music Program.
In the 1970s, he frequently appeared on the Dean Martin Celebrity Roast specials, and he also made the rounds on the late night talk shows up until his final year of life, most frequently on The Tonight Show with Johnny Carson, The Late Show with David Letterman and Jimmy Kimmel Live!
Don Rickles left his primary mark on the entertainment world from his stand-up comedy, and rise to prominence began in the late 1950s when he was noticed by legendary crooner Frank Sinatra (the two of them maintained a friendship for decades afterwards).
Rickles’ insult comic routines earned him the ironic nickname “Mr. Warmth,” and he never hesitated from poking fun at anyone, from celebrities to folks watching him in the audience, no matter what their background.