I have a soft spot for puzzles such as this that have clues presented in alphabetical order of their answers. Goodness knows why, when I might end up staring at a blank grid! Perhaps its just that the ‘sort and slot’ technique appeals to the same desire for order as jigsaws.
At any rate, ‘Lucas’ could be a number of things. Isn’t George still flogging the dead horse of Star Wars? Maybe it’s related to that.