Here’s Don Rickles doing three minutes of ‘Sinatra Is A Gangster And We All Know It’ jokes for Frank’s 80th birthday concert. I can’t tell if Frank is really amused or if he’s out of it but knows he’s supposed to be smiling and laughing. Probably the latter as Frank had a habit of responding during routines like this and this time he’s mute. Nonetheless it’s Rickles insulting Sinatra and that’s three minutes you can’t afford to miss.