Epic (2013): Professor Bomba is very enthusiastic.
George from Faeries (1999) is eternally energetic, optimistic and chipper... much to his sister's extreme annoyance.
Oh from Home (2015) is the most happy-go-lucky and optimistic of the Boov, as well as very energetic.
Dash from The Incredibles can run as fast as a race car, and boy does he like to run. He is also very cheery and enthusiastic, and likes to gush about 'cool outfits'.
Madagascar: Alex (Alakay) the lion is loud, hyperactive and somewhat flamboyant.
Willy Wonka, as portrayed by Johnny Depp in Charlie and the Chocolate Factory. He is constantly smiling, even when bad things are happening, and breathlessly says bizarre lines like this:
Everything in this room is edible, even I'm edible! But that would be called cannibalism, my dear children, and it is in fact frowned upon in most societies.
Ed Wood in the movie of the same name. On the DVD Commentary, the writers theorize that Ed not only didn't know his movies were bad but didn't even care. He just had so much fun making them.
Elf: Buddy the Elf is perhaps the ultimate example. He's a big hearted, cheery, ever optimistic child in a grown man's body. He tries to hug a random raccoon he finds (and end up mauled), is fond of singing, and gets along well with kids, even writing a children's book in the epilogue (which he excitedly reads to a crowd at the department store).
Gord in Freddy Got Fingered is a particularly insane, unusually dark example of this. His boundless energy and short attention span leads him to do disgusting things like masturbating animals and playing with a deer's corpse. He also has No Indoor Voice, and loves cartoons-the more immature, the better.
Kíli of the The Hobbit Trilogy is initially the most cheerful and energetic Dwarf in the company, though he seems to mellow out about halfway through the second film.
