CNN CNN Newsroom With Carol Costello May 19, 2015 14:56:00
Love/hate relationship with other celebrities. >> i can speak to you for a second? >> will you people leave me alone. it's tingling. it's working. that's what it means. >> reporter: david letterman could find humor anywhere. by the late '80s, all of the cool kids wanted to hang with dave. including fellow comic jay leno who had come up with letterman doing standup in the '70s. >> i'm not the kind of guy to brag. >> leno was a dream guest. whatever else was going on in some week or month, we got leno next thursday. >> it led to jay getting the job as the permanent substitute host for johnny bec...