So as not to clog up the Gamey Tactics thread, I wanted to start this thread to discuss the "gameyness" of said tactics.
18. Moving ships over enemy planets and then declaring war to bypass mine fields.
Now, in a multiplayer game, this may be considered a cheat, but I like it because it fits in with a plotline. If you are going to pearl harbor someone, you would hopefully wait until your fleet was past their defenses before slagging their planet, wouldn't you?