I have seen tons of those. Hasbro is making one too, it is in the new 5-pack battle sets, though it isn't the greatest. But yeah lot's of people have done them, I've seen them done in the CW animated style, phruby did a great one, and realistic style. Look around through older threads these were kind of a craze back during the clone wars, though nowhere near as big as custom EP3 clones.