This one sounds pretty cool: you must choose a RANDOM OFFENSIVE NATION! They are giving away big cash prizes, too. Go sign up! It's 1v1 arena-sized secret random land map.

UPDATE: BTW, Graham@BHG says that the "offensive" nations are:

JAPANESE
AZTECS
FRENCH
ROMANS
TURKS
BANTU
GERMANS
MONGOLS

Personally, I am amused that Germans show up as an Offensive Nation instead of an Economic one. They are almost as good as the British, and I've never gotten them as Offensive, although I don't play Offensive that much.
posted by Tim at 3:08 PM