Yep, ESB was the best.
Indy was always a Lucas concept, but Spielberg got involved and the first three (well, 1 and 3) were damned good.
South Park did TWO great takes on Spielberg and Lucas raping their creations, LITERALLY.
At least with IJ4, they simply waited far too long to make another (before we get to the ridiculous scenes and storyline, nevermind in what universe that a mating of Harrison Ford and the adorable Karen Allen could produce Shia LaBeouf). And yes, the SP skewering of Spielberg and Lucas was fantastic.