Jimmy Fallon and The Roots get ready for their Tonight Show premiere February 17 with a hair-raising run on the bobsled track. <br /> <br />Subscribe NOW to Late Night with Jimmy Fallon: http://full.sc/IcjtXJ <br /> <br />Watch Late Night With Jimmy Fallon Weeknights 12:35/11:35c <br /> <br />Get more Jimmy Fallon: <br />Follow Jimmy: http://Twitter.com/JimmyFallon <br />Like Jimmy: https://Facebook.com/JimmyFallon <br /> <br />Get more Late Night with Jimmy Fallon: http://LateNightWithJimmyFallon.com/ <br />Follow Late Night: http://Twitter.com/LateNightJimmy <br />Like Late Night: https://Facebook.com/LateNightWithJim... <br />Late Night Tumblr: http://LateNightJimmy.tumblr.com/ <br />Full Episodes: http://full.sc/LgPtX0 <br /> <br /> <br />Like NBC: http://Facebook.com/NBC <br />Follow NBC: http://Twitter.com/NBC <br />NBC Tumblr: http://nbctv.tumblr.com/ <br />NBC Google+: https://plus.google.com/+NBC/posts <br /> <br />Bobsledders Beware
