Quote from Lily in The Rough Patch
Ted: What the hell is this? Lily: They didn't have any Stormtroopers, so I had to get a different robot. This will still work. Ted: Different robot? Stormtroopers aren't robots. Lily: Of course they're robots. "Must kill Luke Skywalker." Ted: Um, nobody says that in Star Wars. At all. Ever. Marshall: Really lousy robot voice, honey.