Check out this video on YouTube to enjoy more of Glen's (and his imitators!) infamous greeting first heard on the Glen Campbell Goodtime Hour beginning in 1969!
"This video features the voice-over work of TJ Kuenster. It was created by TJ and video editor, Ken Skaggs. The video was a parody on the opening of Glen's old TV Show: 'The Goodtime Hour' on CBS where he says to the television audience each week: 'Hi, I'm Glen Campbell.'" (Source: the YouTube's video description)