Based on the reel, it seems that Catherine O’Hara, who plays matriarch Moira Rose, cracked up most frequently (though she did her fair share of inspiring co-stars to chuckle, too). Eugene Levy had a similar experience when his character and Chris Elliott’s character, Mayor Roland Schitt, teach Stevie ( Emily Hampshire ) how to golf during “Murder Mystery” (season three, episode six). It wasn’t the only time Elliott caused Levy to ruin takes: According to Levy , Elliott would purposely try to crack him up on set.