Entertainment Tonight ET Online ETOnline.com

The Smurfs are coming back for a second helping of big-screen fun, and our own Nancy O'Dell discovered a bit of a challenge on the set of the comedy follow-up sitting opposite Gargamel (played by Hank Azaria): How should she play herself?

Video: 'The Smurfs' Invade New York City!

In The Smurfs 2, Nancy plays herself for a scene in which she interviews the evil Gargamel for Entertainment Tonight. Watch the video to go behind the scenes for her fun day on the set!

Neil Patrick Harris, Jayma Mays and Sofia Vergara are also back for more mini-blue mayhem in The Smurfs 2, and it's no wonder -- for a bunch of cute little blue folk, the first Smurfs movie raked in a whole lot of green – more than a half billion dollars worldwide!

Video: 'Smurfs' Star Sofia Vergara: Katy Perry is a 'Perfect' Smurfette

The Smurfs 2 in 3D arrives in theaters July 31, 2013.