Tina Fey [1] really can do it all. When The Ragtime Gals [2] returned to The Tonight Show Starring Jimmy Fallon [3] on Wednesday night, the actress decided to get in on the fun. As the group sang a barbershop quartet version of Bruno Mars's "That's What I Like," Tina stole the show with her impressive pipes. Let's just say, we wouldn't mind seeing her reprise her role as Ms. Norbury in the upcoming Broadway adaptation of Mean Girls [4].