I'd read in Steve Schneider's book "That's All Folks: The Art of Warner Bros. Animation" about the Looney Tunes' 50th anniversary celebration held in New York's Museum of Modern Art. Gary Weis's documentary "Looney Tunes 50th Anniversary" focuses partly on that, but mostly features interviews with famous people (among them Candice Bergen, Chevy Chase and Penny Marshall) describing Bugs, Daffy, Porky, etc., as though they were real people.
Sometimes, I get the feeling that by this point, the execs looked for any method of getting the characters on the screen. I always like seeing the characters, although I noticed that Mel Blanc's Bugs Bunny voice sounded a little different; maybe his advanced age had hindered his ability to create the voices. As it was, they didn't feature every character: absent are Marvin the Martian and the Tasmanian Devil (plus the lesser known Three Bears and Goofy Gophers) I get the feeling that some people might assert that it sounds brainless for a bunch of celebrities to discuss which Looney Tune was the best, especially when they make the characters sound like real people. Even if that's the case, and even though some of the individuals interviewed have since dropped from the public eye, this documentary should be of interest to Looney Tunes fans (though probably to no one else). OK, if nothing else.
PS: Gary Weis directed short films for "Saturday Night Live" during its early days.
