I don’t know about you folks, but I love Don Rickles, always have always will. But even if you don’t, you should really try to catch “Mr. Warmth: The Don Rickles Project” on HBO this month. It is hilarious, historically fascinating (Don Rickles met e-v-e-r-y-b-o-d-y), and even sweet. Anyone with an ounce of nostalgia for the Old Vegas, Sinatra, 60s pop culture or the cult of stand-up comedy will, I think, get a lot out of it.