Galchenyuk scores the overtime winner on back-to-back nights.
It took a long review, and Max Pacioretty's overtime goal has been disallowed.
Galchenyuk scores on a power play to give the Habs their second straight overtime win.
He now has 31.
Pacioretty has now scores at least 30 goals in the last four seasons.
A great pass from Tomas Plekanec sets up Shaw's winner.
Galchenyuk now has two points on the night.
The goal is Pacioretty's 29th of the season.