Well, there are various way one can market a film and the following old video from Jim'll Fix It is Holiday Special-style awkward. See for yourself how Mark Hamill, as Luke Skywalker, promotes The Empire Strikes Back over a lovely Dagobah picnic with a young Star Wars fan.
The video was uploaded by our friend Scott from Star Wars Aficionado, who have a nice Blu-ray feature preview that you can view here.