Crosby scored the Penguins' fourth and fifth goals to take the NHL lead with 44 on the season.
Alexei Ponikarovsky scored in his Penguins debut, and Jordan Staal, Chris Kunitz and Pascal Dupuis also had goals.
Mike Ribeiro and Brandon Segal each had a goal and an assist, and Loui Eriksson scored his 25th goal for Dallas, which has lost three straight since the NHL resumed play.
Avalanche 7, Blues 3: At Denver, Chris Stewart completed his first NHL hat trick with a penalty shot and Milan Hejduk scored twice for Colorado in his return from a seven-week injury layoff as Craig Anderson made 39 saves in his team-record 20th consecutive start.
Stewart, who boosted his season total to 24 goals, had crossed the blue line on a breakaway when beaten Blues defenseman Erik Johnson tripped him in a desperate attempt to stop him, leading to the penalty shot.
T.J. Galiardi and Matt Hendricks also scored. Alexander Steen scored twice, and David Perron added a goal for St.
Louis.
At Tampa, Florida, Steven Stamkos extended his franchise-record points streak to 16 games, and Antero Niittymaki remained unbeaten against Atlanta.
Stamkos had two goals - which gave him 40 for the season - and an assist. The center has 15 goals and 14 assists during his streak.
Niittymaki improved to 17-0-0 overall against Atlanta.
Martin St. Louis, Paul Szczechura, Teddy Purcell - on a penalty shot - and Vincent Lecavalier also scored for the Lightning, who stopped a five-game losing streak.
Niclas Bergfors and Colby Armstrong scored for Atlanta.
At Washington, Eric Belanger scored his first goal for Washington and fellow trade-deadline pickup Joe Corvo had an assist as the NHL leader beat New York to stretch its club-record home winning streak to 13 games.
With two-time league MVP Alex Ovechkin mired in his longest goal drought of the season - six games - the Capitals are finding scoring elsewhere. Eric Fehr put in his 17th goal off assists from Corvo and Tomas Fleischmann during a 5-on-3 in the first period, and Belanger doubled the lead in the second period.
Jose Theodore made 30 saves for his first shutout in nearly a year.
At Sunrise, Florida, Michael Frolik and Kamil Kreps scored in a 1:11 span of the first period and Tomas Vokoun made 31 saves as Florida snapped Carolina's winning streak at seven games.
Justin Peters made 26 saves while suffering his first career loss following three straight wins. Jussi Jokinen scored his 25th goal for Carolina.
At San Jose, California, Joe Pavelski scored with 4:40 remaining to cap the second straight third-period rally for San Jose in a win over Columbus.
After being blanked by Steve Mason for more than two periods, the Sharks finally broke through with goals from Dany Heatley and Pavelski in the third. San Jose scored two third-period goals Thursday night to rally to a 3-2 victory over Montreal.
Andrew Murray scored the lone goal for Columbus.
At Glendale, Arizona, Ilya Bryzgalov made 32 saves for his seventh shutout of the season, and Wojtek Wolski scored his second goal in two games with Phoenix.
Wolski, acquired from Colorado on Wednesday before the trade deadline, added an assist, and Petr Prucha, Vernon Fiddler and Keith Yandle also scored to help the Coyotes win their second straight after a three-game losing streak.
At Sunrise, Florida, Michael Frolik and Kamil Kreps scored in a 1:11 span of the first period, and Tomas Vokoun made 31 saves as Florida snapped Carolina's winning streak at seven games.
Cory Stillman scored late in the third period, and Kreps added an empty-net goal to help Florida win its second straight game after a seven-game losing streak.
At Los Angeles, Brian Gionta scored in the first minute, Benoit Pouliot connected in the opening minute of the third period and Dominic Moore put Montreal ahead to stay with a short-handed goal in the second.
Tomas Plekanek scored his 18th goal into an empty net with 1:11 to play, and Scott Gomez had two assists. Jaroslav Halak made 23 saves for the Canadiens.
Anze Kopitar scored his 30th goal of the season in his 300th NHL game, and Fredrik Modin scored his first goal for Los Angeles after being acquired from Columbus.
At Ottawa, Phil Kessel and Nikolai Kulemin scored on Toronto's first two shootout attempts, and Jonas Gustavsson turned aside Ottawa's two attempts.
Kessel, who scored his 22nd goal and had another potential goal waved off in the second, beat Pascal Leclaire with Toronto's first shot in the tiebreaker, and Kulemin ended it when he converted the Maple Leafs' second attempt.
Gustavsson stopped 22 shots in his first start since playing for Sweden during the Olympics. Chris Neil scored for Ottawa.
At Uniondale, New York, Marc Savard scored in the second period and Tim Thomas made 37 saves to lead Boston past New York in the opener of the Bruins' season-high seven-game road trip.
Milan Lucic and David Krejci also scored for Boston.
Josh Bailey and Matt Moulson scored for the Islanders.
