The Matrix was a lot like Vanilla Sky, when you got down to the very core ideas behind both movies, but I feel that Vanilla Sky had superior acting/directing etc. If I had The Matrix on dvd I'd probably only watch the fight scenes, but, like I said, the movie was fairly well done, it was a good "comic book" film.
Gladiator is in a realm of its own. One of my favorite films from the get-go, Commodus, in my mind at least, is easily one of the best villains ever. I mean, come on, the guy killed his own father, is nuts, and cheats when he tries to kill Maximus and still dies. He wants to "do" his sister and kill his nephew, who, from all outward appearances, he loves. His evil is deeper than many of the bad guys in films we see today or have ever seen. Phoenix should have gotten the Academy Award for that, I remember going apeshit when the guy from Traffic won instead.