Christopher Reeve later made even higher gains for "Superman III" (1983), though for "" (1987), he decided it would be healthier to focus more on cardiovascular workouts. One of the reasons Reeve could not work out as much for "" was an emergency appendectomy he had in June 1986. Reeve was never a Superman or comic book fan, though he had watched "Adventures of Superman" starring George Reeves. Reeve found the role offered a suitable challenge because it was a dual role. He said, "there must be some difference stylistically between Clark and Superman. Otherwise, you just have a pair of glasses
Superman in film Reeve Superman Collection", an 8-disc set that was valued at US$79.92. Like the 2001 set before it, "The Christopher Reeve Superman Collection" received positive reviews. Also on November 28, 2006, a 14-disc DVD box set titled "Superman Ultimate Collector's Edition" was released, containing "Superman", "Superman II", "", "Superman III", "Superman IV", "Superman Returns", and "", among other releases. All contents of the set were housed within a tin case. The set was valued at US$99.92, and received extremely positive reviews when first released. However, after only a day on the market, Warner Bros. announced that there were two errors discovered