How many seasons did the sitcom which Bobby Gaylor acted for have? 
Bobby Gaylor:  He was raised in Boston and moved to L.A. to write for Roseanne Barr's television sitcom "Roseanne". Roseanne Barr:  Barr began her career in stand-up comedy at clubs before gaining fame for her role in the hit television sitcom "Roseanne". Roseanne Barr:  The show ran for nine seasons, from 1988 to 1997.
nine