Damn straight I have. One of my favorite RTS's. I was never able to get into the more fast-paced RTS's like Starcraft, I loved being able to build my own civilization, building-by-building, city-by-city in a slow yet still well-paced time frame. It was kind of like Civilization in that respect, but it played a lot like Age of Empires in terms of mechanics, which I like a lot better. However, Age of Empires would always focus on the development and progress of just one age, whereas with Rise of Nations, you could start at your nation's earliest beginnings and work your way all the way to the modern age.
Overall, damn good game. I'd give it another playthrough if I still had the disk.