Moviefone recently sat down at a roundtable discussion with the stars of the upcoming 'Smurfs' movie. After speaking with Neil Patrick Harris, Hank Azaria and Tim Gunn, we were able to discover how tall a Smurf is, whether Smurfette has given birth to the entire Smurf population, and if "Smurf blue" is going to become the new "it" color this fall.