For those that haven't been tuned in, new Tonight Show host Jimmy Fallon is starting his tenure off right. Fallon's debut week on The Tonight Show sees a lot of hip-hop themed segments and skits; including the history of hip-hop dance with Will Smith a.k.a. The Fresh Prince (as if you don't know who he is), a fifth installment of his infamous "a history of rap" series with Justin Timberlake. One segment amongst these is a well edited music video of sorts for Sugarhill Gang's classic old school slap,"Rapper's Delight". Except this one stars NBC nightly news' anchor, Brian Williams. Check that out right below: