Well, why not stage a fake Star Wars casting call, then tell candidates to give their best impressions via voicemail?
Not a Burger Stand is a restaurant in Burbank, California that comes up with a weekly promotion that offers discounts to customers if they imitate different movie or television characters. I don't even care how their food tastes...that place is worth going to just for how amazing their signs are!
Everybody's got a Christopher Walken, Jack Nicholson, and Woody Allen impression. How about you throw in a few impressions people don't usually do? Like Gwen Stefani and Shakira. How he pulled those off, I will never know.