This is a special feature off the 2-Disc Special Edition DVD release of Batman Returns, which came in 2005, and it deals entirely with the penguins, the army of them. This is made up of interview bits with crew(and a bit or two of DeVito and Burton, for a similar amount of time as Danny), clips from the film itself, inter-cut, and various footage from where they worked with the trained penguins, and where they worked *on* the ones that aren't real.
