Sheffield Wednesday boss Dave Jones saluted Leroy Lita for the "scruffy" debut goal which sank Charlton 2-1.
Lita, who joined the Owls on loan from Swansea just 24 hours earlier, climbed off the bench to hit a dramatic last-minute winner.
The former Valley loanee swept home Jermaine Johnson's cross from six yards out as Wednesday came from a goal down to snatch an unlikely victory.
"It's nice to have a striker on the pitch who can get that scruffy goal," said Jones. "He's done that all his career - and he's scored some good ones as well.
"We defend well but scoring has been a problem. Hopefully one or two will learn by watching him and that's a good education.
"He's been a good player wherever he's been and the one thing he's done is score goals. He knows where the back of the net is."
Charlton missed the chance to climb to within five points of the play-offs as their perfect start to 2013 came grinding to a halt.
"That's football, sometimes you love the game and sometimes you hate it," said shellshocked boss Chris Powell. "It's one of those days that hasn't gone for us.
"The turning point was when we hit the post, that would have sealed the deal for us.
"It's a tough way to lose after playing our part in a tough game. We got stronger and better as the game went on and went ahead through a good goal, but then couldn't see the game out. It's a bitter pill to swallow but the players have done terrifically well this month."