'Glee': The girls rock Bon Jovi
“Glee” sure does like its mashups. Tuesday night's episode will once again pit the girls and boys against each other, but there's a twist this time. "The boys have to do songs that are for girls and the girls have to do like masculine songs," reveals Cory Monteith in a behind-the-scenes peek at the episode. That explains the girls putting their “Hairography” skills to use on a mashup of the Rolling Stones' “Start Me Up” and Bon Jovi's “Livin' on a Prayer.” Check out a preview of the leather-filled number below, as well as behind-the-scenes footage of the girls' and boys' performances behind the cut.