^ That commercial campaign actually had a storyline, there's almost 10 commercials which take you to each environment from the movie.
(most can be found on Ripplin's Star Wars Galore. Details: http://originaltrilogy.com/forum/topic.cfm/F-L-I-M-S-I-P-L-A-S-T-D-A-T-A-B-A-S-E/post/500333/#TopicPost500333)