Jennifer Lothrop

When Barney and Abby realize that they have one thing in common - their mutual hatred of Ted - the "couple" decides to go to the bar to flaunt their new relationship in Ted's face.

J.D. turns to Carla and Turk for help diagnosing a patient with puzzling symptoms; running into her former flame (Scott Foley) prompts Elliot to undergo a complete makeover.

Holly becomes pals with Jeff's ex-girlfriend, Dana when they both go to a U2 concert with Jeff, even though Val warned Jeff and Holly not to go with Dana, and Jeff never even wanted Holly and Dana to be friends. Meanwhile, Gary saves the life of a real-estate magnate at the concert.

When Marsh decides to throw Chuck a surprise party, Chuck and Kelly discover an incriminating photograph on Marsh's wall portraying them in a compromising position in the background and they try to find a way to remove it without anyone's knowledge. Meanwhile, Gary and Ryan stumble into Marsh and Peg's bedroom and are disturbed by what they see.