Undertaker vs. Batista at WrestleMania 23. I don't think it gets enough credit, but it's one of the best matches Undertaker ever had at WrestleMania.
Up to that ‘Mania, I thought Batista’s matches were kinda meh at best, but he was on his game that night and I think he knew it too and gave him a confidence boost because his matches got a lot better to me after.