My first exposure to Star Wars - I "learned" Darth Vader (or as I knew him, Dark Vapor) was Luke's father by the Lego cutscene where he takes out a picture of him, Padme, and baby Luke while Luke is clutching his chopped off arm.

What a gem of a game, not sure if I was able to eventually get all 10 minikits in each level, but I definitely tried. And running around in the Lego City area and building up Mos Espa hub with the golden bricks was many an hour spent.
And after finishing LEGO Star Wars I, was sick to have both Boba and Jango Fett together.