Stunky & Skuntank for Diamond, Zekrom for White, Reshiram for Black, Glameow & Purugly to for Pearl...
EDIT: Well, you cannot get Stunky in any other game. That's what I meant
This is a list of all of the version exclusive pokemon starting from Gen I
http://bulbapedia.bulbagarden.net/wiki/Version-exclusive_Pokémon