Cartoons or Movie that Deadpool was in

Deadpool was only in the X-Men: The Animated Series for a sec in the 3 other episodes.

Deadpool has lots of parts in a Marvel animated film "Hulk vs. Wolverine" voiced by Nolan North

At the time before the cancellation of Wolverine and the X-Men was announced, a proposed season two was in the works which would have included Deadpool being sent by Weapon X to bring in Wolverine. Nolan North was casted for his voice. They better bring the fucking show back god damnit!

Deadpool appears in the film X-Men Origins: Wolverine, first as a pre-transformation Wade Wilson played by Ryan Reynolds.

Almost at the end  of X-Men Origins: Wolverine, mouthless Weapon XI played by Scott Adkins. He appears to be a highly skilled, wisecracking mercenary who wields a pair of swords with superhuman speed and skill sufficient to deflect fully automatic weapons fire. He is later reportedly killed, only to return transformed by Colonel William Stryker into Weapon XI, a mutant killer who possesses other mutants' powers, including Scott Summers' optic blasts, John Wraith's teleportation, Chris Bradley's technopathy and Wolverine's healing factor and a similar pair of extendable blades resembling swords. He is referred to as "the Deadpool" because the powers of the other mutants have been "pooled" together into one being. Wolverine and Victor Creed fight Deadpool in one of the final sequences of the film, apparently killing him, although a post-credits scene appearing in DVD releases of the film imply that Wilson survived the battle.
He will have a movie in 2014???  

Deadpool has a brief cameo in episode 12 of the Marvel Anime: X-Men series.