Giroux fooled Boston goalie Tuukka Rask with a backhand-to-forehand move, then Michael Ryder's wrist shot hit the post on Boston' final attempt, giving the Flyers a 4-3 victory over the Bruins on Thursday night.
"We practiced it a couple of times, and I thought I'd try it," Giroux said. "If it didn't work, I would've looked stupid, but it worked."
Playing for only the second time in 12 days because of a scheduling quirk, the well-rested Flyers shook off some rust by the peppering 39 shots at Rask. Philadelphia is 1-1 in shootouts.
Philadelphia (4-2-1) snapped a three-game losing streak after starting the season 3-0 for the first time since 1998-99. Boston dropped to 4-5-0. They have followed each of their wins with a loss this season.
Matt Hunwick smacked a wrist shot from just inside the blue line, giving Boston a 2-1 lead.
Philadelphia's Aaron Asham's slap shot from the right faceoff circle made it 3-2 with 6:54 left in the second, but Boston left wing Steve Begin knocked in a rebound to tie it.
The Flyers had a chance in the game's closing seconds, but Jeff Carter's short-handed breakaway attempt was stopped.
A quiet five-minute overtime sent the teams into a shootout. Danny Briere's attempt missed wide right and Rask stopped a shot by Mike Richards. For Boston, Ray Emery denied Blake Wheeler and Patrice Bergeron.
Flyers coach John Stevens selected Giroux, and the right wing didn't disappoint. He entered that appearance 0-for-3 in his career.
"I think the kid flourishes in that spotlight there," Stephens said. "We had a shootout practice the other day and he made a similar move. We've used him a few times before, but he's made good moves and not scored. We decided to give him a shot tonight, so I'm glad I did."
Powe knew something was coming.
"It's always fun watching him play," Powe said. "That move he pulled had everyone off their feet. He's a special player and a guy who can do that. I knew he'd do that. Pretty sick."
Rask had little chance.
"He has good hands," he said. "I played against him in the minors. ... I had no idea what he was going to do. He made a good move."
- Philadelphia Phillies' pinch-hitter Matt Stairs attended the game.
- Carter played in his 221st straight regular-season game.
- Tollefsen had his first career two-point game.
- All four Flyers' home games have been decided by one goal.