Obviously, this is a blatant attempt to promote the upcoming DVD release of Batman Begins:
Scientists have taught dolphins to combine both rhythm and vocalisations to produce music, resulting in an extremely high-pitched, short version of the Batman theme song.
The findings, outlined in two studies, are the first time that nonhuman mammals have demonstrated they can recognise rhythms and reproduce them vocally.
And when presented with a copy of Batman and Robin, the dolphins attacked both the DVD and their trainers, mauling both. This was not a learned response but something pure and instinctual, just proving yet again the innate intelligence of our fine friends from the ocean.
Found via Dave Barry.