The late night host compiled clips of the NBC news anchor to make him appear to perform Sir Mix-A-Lot's "Baby Got Back" on The Tonight Show Monday. Today show hosts Kathie Lee Gifford, Savannah Guthrie and Hoda Kotb make cameos in the video to provide additional vocals.
Fallon has featured Williams in several other mashup rap videos, including Warren G's "Regulate" and Snoop Dogg's "Gin and Juice." Actor Cuba Gooding Jr. reportedly spoke to Williams at a New York Rangers game, and told the anchor he is a "huge figure in the rap and hip-hop community."
Swim Week Miami Beach 2014 [PHOTOS]