The goal changed everything.
"The more and more his highlights were on TV -- people were seeing the defense scared of getting beat by him," Clark said. "They were looking foolish on TV and in front of the crowd, and everything, so they were just giving up the blue line and letting him shoot because they didn't want to get beat wide.
"After that, that's where you see how hard his shot was. How he could get pucks on net. As the season went along, he wouldn't play differently, but he'd show different ways of scoring, getting shots on net or getting scoring chances.
"It's amazing how he adapted to everybody. They would give him the blue line, so he'd cut across the middle and shoot."
Clark laughed.
"Or he'd just get mad and run right over them," he said. "At 230 pounds, there weren't many people getting in his way."
The next season, playing alongside Ovechkin and Dainius Zubrus much of the time, Clark had an NHL career-high 54 points (30 goals, 24 assists).
Clark was named captain of the Capitals before that 2006-07 season and held the position until he was traded to the Blue Jackets along with defenseman Milan Jurcina for forward Jason Chimera on Dec. 28, 2009. Ovechkin was named captain on Jan. 5, 2010.
Clark finished his NHL career playing 89 games with the Blue Jackets between 2009-11 and was named development coach for Columbus on June 5, 2012. In 607 NHL games, he had 214 points (103 goals, 111 assists) and reached the Stanley Cup Final with the Flames in 2004.