Yes, I would. He's got a very wacky sense of duty, his loyalty is to the Force above all else, and he's got some pretty goofy Ravenclaw traits too (insists on staying in the moment yet totally believes in millenia-old, poorly understood prophecy), but he's a badger to the bone.

His real problem is he is a 'Puff at odds with his sett. It makes him into a very unhappy fellow.

You might want to read sanj's Hufflepuff Manifesto and imadra_blue's Ultimate Villians of Each Hogwarts House (Palpatine is a Slytherin and Vader a Gryffindor, but you knew that), Heroes by House and Star Wars Sorting.

It certainly makes you think about what each house means...