During the shoot for Night at the Museum: Secret of the Tomb in May, actor Skyler Gisondo, who played Ben Stiller's son, was missing the time of year at his school when his friends were asking girls to the prom. Gisondo enlisted the help of costars Stiller and Robin Williams to shoot a video proposal to his intended prom date. Williams and Stiller loved the idea. Gisondo told the Hollywood Reporter,
“All morning, Robin was pitching more ideas. He was saying ‘Can I say this? Would it be appropriate to say this?’ You’re Robin Williams. You can say whatever you want! It turned into this three-minute, ridiculous thing. A prom-posal.
I realized that was the most awesome three minutes of my life and I’ve accepted it will go downhill from there.”
Gisondo, who called Robin Williams “a bottomless reservoir of kindness and hilarity,” said of his time working with the late actor,
“It was just so special to work so closely with this guy whose movies I’ve grown up with and watch his preparedness and his kindness.”