Toronto 2012: Kristen Wiig and Christopher Fitzgerald Share a Loopy Moment on the Set of 'Imogene' (Video)

When asked what they enjoyed most about working with each other on the set of Imogene, Kristen Wiig and co-star Christopher Fitzgerald shared a long sigh -- then laughed. 

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The duo, who play brother and sister in the Shari Springer Berman-directed comedy that debuted at the Toronto International Film Festival, sat down with The Hollywood Reporter to chat about some lighter moments on set. 

"Well, the very last scene, something we shot later in the shoot, it was like the end of the movie we're all in this limo and it was really late [and] we had a lot of fun that night," explained Wiig. 

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"She actually started calling me 'Chris' instead of 'Ralph,' the character's name," said Fitzgerald.

"I think people thought I was having a breakdown, because I was just sort of screaming 'Chris' in the middle of the scene and he was like, 'I'm Ralph'," said Wiig, laughing.