The folks at Late Night With Jimmy Fallon are showing their love for Bruce Springsteen in a big way this week. They have dedicated every episode from this past Monday through this coming Friday to the Boss and his E Street Band. That doesn't mean they need to be on the show every night, though, which ws made perfectly clear last night during the musical guest portion of the program. With some help from the Roots, John Legend covered Springsteen classic "Dancing in the Dark" and turned it into a low-key, jazzy romp. Watch it for yourself below.