Langenbrunner scored his second goal of the game 3:04 into overtime as the Devils rallied for a 3-2 victory over the Ducks, who had a three-game winning streak snapped.
Coming off a 6-3 home loss to Edmonton that had coach Pat Burns fuming, New Jersey appeared lethargic for more than two periods as Anaheim built a 2-0 lead.
But Langenbrunner got the Devils on the board with 12:11 left in regulation and Scott Gomez tied it 29 seconds later.
"I wasn't upset," Burns said. "No matter what the outcome of this game was, I wouldn't have been upset. This team worked tonight."
In the extra period, defenseman Scott Stevens fired a slap shot from just inside the Ducks' blue line. Jean-Sebastien Giguere allowed a rebound in front of the net, Langenbrunner beat the defense to the loose puck and flicked it past the goaltender's glove to complete his second two-goal game of the season.
"Scott took the shot and I just drove to the net, which is my job," Langenbrunner said. "And I was able to put it in the net."
"(Langenbrunner) was just driving to the net and he got his stick on the rebound," Ducks defenseman Keith Carney said. "I was just trying to stay in front of him. I looked back just after (Stevens') shot and I thought Jiggy had it. I've got to make sure to maybe grab the stick next time."
This was the only regular-season meeting between teams that completed a blockbuster deal in the offseason. Anaheim's Petr Sykora picked up an assist against his former team while ex-Duck Jeff Friesen set up Gomez's equalizer.
"We had a side bet going, and I wanted to make sure he didn't score on me," said Devils goaltender Martin Brodeur, who made 33 saves. "We miss him, but it's part of being an NHL player. You're going to move sometimes, but it was weird to see him on the other side."
Sykora picked up the secondary assist on the opening goal. Andy McDonald appeared to surprise Brodeur with a wrister from the top of the slot, beating him on the game's third shot.
"If you look at the replay of that first goal, they wanted to make a back pass. He flubbed it, shot it and surprised everybody," Burns said.
Giguere stopped all 21 shots over the first two periods, helping the Ducks take a slim lead into third.
Marc Chouinard doubled it with a shorthanded goal at 6:54. He stripped the puck from defenseman Scott Niedermayer in the neutral zone, broke in ahead of the defense and put a shot off Brodeur's right arm and into the net.
"When they scored the first goal, we didn't panic. They got some sort of break on the second one off Ralfie's (Brian Rafalski) stick," Brodeur said. "But we stuck with patience and held them to a lot of long shots."
The patience paid off as Langenbrunner drove the net and deflected a perfect centering pass from Jim McKenzie past Giguere less than a minute later.
"Jimmy makes a great play and I was able to get a stick on it," Langenbrunner said. "We got back in the game and we just couldn't get down on ourselves for getting behind, 2-0. It was a letdown, but we knew there was enough time to get back, and we scored right away."
Gomez tied it on the next shift when he wristed a shot from the bottom of the right circle past Giguere's stick side.
"It's a good road point, (but) we should have gotten two points," Ducks coach Mike Babcock said. "We didn't keep the foot on the gas the whole way. But we didn't stop playing. In the third period, they got two goals on three shots. We were outshooting them, 7-3, but they got good goals by good players."
Giguere stopped 29 shots, but Anaheim also had a three-game road unbeaten streak stopped.