"1974"^^ . . . "Bad Bart"@en . . "Bad Bart is a cowboy who appears in a series of Old West sketches on Sesame Street. Like Sinister Sam, it seems like he's going to make trouble, but he turns out to be harmless. He appeared as early as Season 5 (1974)."@en . . . . . . . . "Bad Bart is a cowboy who appears in a series of Old West sketches on Sesame Street. Like Sinister Sam, it seems like he's going to make trouble, but he turns out to be harmless. He appeared as early as Season 5 (1974)."@en . .