I personally own the Alien Quadrilogy box set, and that's a pretty awesome set of DVDs -- the four real Alien movies with tons of extras. If Fox were to release that same set in Blu-ray, I'd probably not worry about paying for the upgrade, even considering how awesome the films will likely be in HD. However, I have just learned what will convince me to upgrade: the same set, in Blu-ray, with totally badass packaging. Just take a look at that thing.