Carson Daly in the "My Name is Earl" premiere

Obviously he didn’t invent the concept of Karma (or did he…?). But was the Carson Daly interview, which Earl watched in a morphine-addled haze from his hospital bed, filmed just for the show, or did it already exist and was simply reused on “My Name is Earl”? Was Daly paid for its use? And who was the guy (a country & western singer, maybe?) to whom Daly was speaking?

IIRC the country singer was Trace Adkins. He has a couple good songs. Don’t like his attitude much though.