So, I am curious to know what people's favorite Civ 5 civilization is.

My favorite (or at least the one I play the most) is the french. I enjoy the extra culture early game as it can be quite beneficial in getting a good start.

I have also begun playing as the germans quite frequently. I am quite particular to playing them with raging barbarians set in the advanced rules to maximize the ability to convert them.

I'm a big fan of both Korea and Siam. Poland is pretty cool, too.

Persians. Dat 50% longer golden age. I've seriously had, between wonders and great people, over 100 turns in a row of golden age.

I've only played through once with Japan which was great. In hindsight always leave a samurai somewhere to go setup your boats.