I heard this one during Monday Night Football and it makes me crazy.

Hand to hand (as in fighting and combat....) in spanish is "MANO A MANO".

I cringe when I hear people used it incorrectly.

Mano y mano is Hand and hand.
The announcer on MNF says "mano y mano, man to man"

WTF?
You can't even get one side of the equation right!