Here are a couple I truly loathe:
"You (or he or she or someone or something else) rocks."
And the one we heard over and over is "the card."
The race card
The gender card
The elite card
Ack.
And I hate it when people use "Dude" too.
A personal dislike of mine, for obvious reasons, is "Geez Louise," followed closely by "Christ on a Crutch" and "Jesus H. Christ."
On the other hand, one of the more recent ones, which you sometimes see on LOLCat pictures, is "I see what you did there."