The biggest "what the heck?" moment in a Sundance movie this year may be the scene in "The Wackness" where a stoned shrink, played by Sir Ben Kingsley, makes out with a hippie chick played by Mary-Kate Olsen.

During the Q-and-A after Friday's premiere screening, writer-director Jonathan Levine said, “for me, it was totally not any big deal -- but maybe I’m just weird.”

So how was shooting the scene?

"When everyone was in character, it was like another day at the office for all of us," Levine said.

Olsen admitted, "I was a little nervous. But he was so sweet and so kind, and he made me feel so comfortable that it was fun."

There was one slight mishap, though. "I almost pulled out the hairpiece he was wearing," Olsen said.