How about
"You sunk my Battleship!"
"Come in Peace? Leave in Pieces."
"Im gonna to tell my Dreadnought on you."
"Last Great act of Defiance"
"And the meek shall inherit the Earths"
"The best defense is a strong offnese" (great for a space station battle)
"You misunderstood our universal translator. We didnt say we wanted "peace on earth", we said "piece of Earth"
"We decided that we dont like you." (a many races against one battle?)
"Activiate the Corbomite Destruct Unit"
Not to mention some great ones from reading "the Rules of Acquisition"
In two minutes I can put any image to a variety of products.
http://www.cafepress.com/oddthotz/557757?pid=2837642
Gandalf Parker