Some regular theatergoers may not like some of the shows Gainesville Theatre Alliance has coming up, said Jim Hammond, artistic director of the alliance. “Avenue Q,” an award-winning musical that features puppets, will be on stage Feb. 13-24 at Brenau’s Hosch Theatre. And Hammond has been trying his best to make it clear the show is R-rated. “If Sesame Street had been created for adults about adult issues, this is what it would look like,” Hammond said.