I've seen other folks posting paeans to their favourite Civ IV civs and leaders--Catherine, usually, and one memorable one about Washington. I thought I'd give voice to mine. I love playing as Rome/Caesar. Partly because I've always been a Romaphile; the history of the ancient empire has always fascinated me. And, yes, the Praetorian is an awesome (though misnamed) UU, as it should be, to reflect how dominant the Roman Legions were. But what I really like about Caesar are his traits: Organized and Expansive. These are, I find, two of the most undervalued traits available. Financial is the perennial favourite; Organized and Expansive tend to get a shrug at best. But in combination with Rome's UU, they're perfect. The best thing to do with such an awesome early UU is, of course, to use it. If you play as Caesar, you're a fool if you don't use the "Praetorian Rush". I find that if I play as another civ and do an "Axeman rush", I can take out one nearby competitor in an early war. With Praetorians, I can usually take out two rivals before Longbowmen and Macemen appear and make the unit obsolete. So, the Praetorian Rush gives you a huge empire and less competition early in the game. You retire your veterans to ceremonial guard duty in your isolated core cities. This is where Caesar's traits kick in big-time. We all know maintenance can kill you in Civ IV, which curtails the "expand 'til you drop" approach of previous Civ games. But Caesar can get around it. Organized allows you to build courthouses FAST in all those conquered cities to drop your costs quickly. (It also means you get the opportunity to build the cost-reducing Forbidden Palace sooner.) Plus your civics are half-price. In a big empire, these quickly-available cost savings in and of themselves often compensate for not having the Financial trait, especially since they're available sooner than waiting for a cottage to mature to a town. (You still have to cottage spam, of course--doesn't everybody?) In addition, with a big empire, even on a pangaea map, you probably have several cities on the coast, and with Organized you can build cheap lighthouses to get them growing quickly. (Frankly, it makes sense, as Rome, to found and/or capture several coastal cities to take advantage of the cheap lighthouses, harbours, and the free fishing tech.) Expansive is often even more undervalued than Organized, from what I've seen. But it allows Caesar to build more cities on lucrative but unhealthy floodplains. You can build cheap granaries, which, like the cheap lighthouses, further encourage city growth, and because they're cheaper, the cities can start growing at a faster rate far earlier. Caesar's cities can also, with that +2 health, better handle the sickness problems created by this rapid growth. And those cheap harbours also add to your bottom line and grant another health bonus, provided you're taking advantage of that free fishing tech, as I mentioned. Long story short, after the Praetorian Rush, I usually slingshot ahead of the other Civs thanks to Caesar's traits, giving me a big lead by mid-game. I've been able to build some of Civ IV's most valuable buildings quickly and health does not become a significant issue in my cities for some time. Ave, Caesar. Ave, Roma.