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By Emily Russin
Special to MSN TV

Some TV rivalries will never fade into obscurity. Who can forget the burning rage Tony Soprano had toward Phil Leotardo? Or the pensive despair Jan Brady felt when comparing herself with her perfect older sister, Marcia? Classic television ... moreface-offs, whether Pierce and Hunnicutt's gleeful torment of Frank Burns on "M*A*S*H" or Jerry Seinfeld and his nemesis Newman, show that conflict can, and usually does, spring from anywhere. And this season's shows are no exception. From "Gossip Girl" to "Grey's," there are plenty of characters ready to rumble. Here's a look at the season's biggest rivalries, many of which are sure to deliver that all-decisive knockout blow.