All those singing cats and clumsy kittens you currently see on YouTube will soon be getting some more feline company at the online video Web site: Leo, the roaring, toothy Metro-Goldwyn-Mayer lion. The movie studio announced Monday that it would allow a very limited selection of full-length movies and TV shows from its library, along with one- to two-minute clips from MGM films. The first offerings can be found at the action-oriented Impact Channel — clips from “Rocky,” “Pray for Death,” “The Dirty Dozen,” “Rollerball,” along with full-length films “Lone Wolf McQuade” and “Bulletproof Monk.”
