I think ftag is the most interesting mod right now.
Its interesting to see strategies develop, both the good and the bad.
Here are two I have been seeing work:
1) Squads of three, one up, two back. If the pointman gets frozen, the two behind can unfreeze him. They then hold until the orgianal point rejoins, and continue. It seems almost impossible to stop this.
2) The willing sacrifice: One player stands up in a spot with a clear view of the battlefield. Gets frozen, but then teammates only partially unfreeze him. Now, he can serve as a forward observation post, without any recourse fo rth eother team.
One that does not:
Strafing a spawn area is so much fun, everyone tries to do it. They tend to come down one side or the other. Setting up a fire trap on the side yields a steady supply of overly aggressive opponents to blast away at.
Hey, I'm told I have to post 20 times. Its either stuff like this, or pictures of cats.