Star Wars is THE space opera and few would argue with its sci-fi brilliance. The practical effects of the original films were remarkable for their time period, and remain far more convincing than the risible attempts at “updating” the series in the 1990s. Unfortunately, George Lucas has decided to make the Star Wars Special Editions the primary form of the films, which means that in addition to slightly grungy Muppets, we also have to deal with poorly animated musical numbers and added spacecraft.
You can take your pick of any of the special editions for bad CGI, but most of my hate goes towards the unneeded musical number at Jabba’s palace.