Glee's Grease episode is almost here! Season 4, Episode 6, “Glease” airs on Thursday, November 15, and this sneak peek video is already offering a behind-the-scenes look at what to expect. Blaine (Darren Criss) makes just about the most swoon-worthy Teen Angel we've ever seen (sorry Frankie Avalon!) and newcomer Ryder (Blake Jenner) is pulling out all the right moves as John Travolta's iconic Danny. From just this sneak peek alone, we're already in love with his rendition of "Greased Lightning."