In Part 4 of this 7-part interview for the Archive of American Television, (see the complete interview at www.youtube.com ),George Carlin discusses his appearances on the Ed Sullivan Show, how he edited his material for television, how his “world changed” through several appearances on “The Tonight Show with Johnny Carson”; he comments on and refutes the criticism he received for “cashing in on the hippie craze”; his final appearance at the Copacabana (and how he got fired); his first gig to …