Garner and Ruffalo even posed for photos by recreating the iconic “Thriller” dance moves. This isn't the first time that Ruffalo and Garner have looked back at their time on 13 Going on 30.

For everyone to see us dance Thriller together. Does this work for you, cutie-patootie? (So many amazing kids in and behind the scenes, I’m proud of all of you)." The movie 13 Going on 30 starred ...