Bugs Bunny as the "Rabbit Season/Duck Season" trilogy and are famous for originating the "historic" rivalry between Bugs and Daffy Duck. Jones' classic "What's Opera, Doc?" (1957), casts Bugs and Elmer Fudd in a parody of Richard Wagner's "Der Ring des Nibelungen". It was deemed "culturally significant" by the United States Library of Congress and selected for preservation in the National Film Registry in 1992, becoming the first cartoon short to receive this honor. In the fall of 1960, ABC debuted the prime-time television program "The Bugs Bunny Show". This show packaged many of the post-1948 Warners cartoons with newly animated wraparounds.
The Bugs Bunny Show a half-hour and renamed "The Bugs Bunny & Tweety Show". Beginning with its third season, "The Bugs Bunny & Tweety Show" was expanded to a full hour, and the original "This Is It" theme was reintroduced, accompanied by a newly animated introductory sequence. Another version of the "This Is It" opening sequence was done in 1992. Though the program did not qualify for the educational/informational designation, it nonetheless remained on Saturday mornings after the new designation debuted in 1996, one of the few non-E/I programs to survive the rules changes. That same year, ABC was bought by The Walt Disney