Usavich (ウサビッチ, Usavich?) (from Japanese うさぎ "usagi", rabbit, with "vich" giving it faux Russian flavor) is a series of animated short films being produced for MTV Japan by Kanaban Graphics since 2006. It's about an odd couple of rabbits imprisoned in a Russian prison. While the first season shows the absurd everyday occurrences of the two rabbits' prison life, the second season tells the adventures of their escape and life on the run. So far, 26 episodes have been produced.
Incredibly funny, watch it. Don't worry about the Japanese, they don't speak other than mumbles and groans.