Just like the rest of us, NHL superstars have good weeks and bad weeks. Alexander Ovechkin, Pavel Datsyuk and Steven Stamkos are all susceptible to the same ups and downs as us "normal" folks and can see their cold streaks develop into cold months and then cold years.
The best players figure out ways to snap out of these slumps—Datsyuk is still an awesome two-way forward when he's not scoring, Ovechkin will always draw defenders away from his teammates and Stamkos will always be a threat from the left circle in the offensive zone.
A player's career isn't defined by the streaks. Instead, it's defined by how the player handles that odd roller coaster of effectiveness and ineffectiveness.
Over the last three seasons some of the NHL's best players have struggled, only to bounce back and win MVP awards and Stanley Cups. Others have gone the opposite direction, trending downward with the weight of non-production weighing on them.
All statistics appear courtesy of Hockeydb.com.