18 months had passed after Bugs Bunny's 50th birthday when WB was supposed to release the short, "Blooper Bunny", to theatres. For reasons known only to the studio, the film sat in the vaults for 6 years before Cartoon Network saw fit to premiere it in 1997.
The late Gordon Hunt, better known as a voice director than a voice actor during his career, and Jeff Bergman are the only actors heard in this piece. The plot is sort-of backwards, as we see the beginning of a mock special, followed by the gazillion retakes in rehearsals (the bloopers, of course).
The same creative personnel also worked on "Invasion of the Bunny Snatchers", and that actually was released without incident. Go figure.