Grover as Old Spice Man on Sesame StreetOld Spice Guy Isaiah Mustafa became a huge viral marketing superstar this year, and now he's even worked his way into 'Sesame Street.' In a new clip, furry blue monster Grover tells viewers the advantages of smelling like a monster and knowing the word "on." Mustafa doesn't make an appearance, but Grover makes a pretty good stand-in.

The spoof is spot on. Grover sports a towel and does the "look at yourself, now back to me" bit, the "two tickets to that thing you love" bit, and, of course, "I'm on a horse."

Either way, this clip is set to become more viral than 'Sesame Street's' 'True Blood' parody, and may even top the banned Katy Perry clip. Controversy definitely scores YouTube views, but Old Spice Grover's humor and cuteness are more likely to win over the target 'Sesame Street' audience.