Elmo has been around a long, long time, and he's one of the few characters that all of the generations that have come forth ...

The ad stars Federer and Sesame Street's Elmo playfully clearing up any confusion around On's brand name and logo in a memorable way. Below is a sneak peek at the great new video. "As On continues ...

(Richard Termine/Sesame Workshop via AP) This image released by Sesame Workshop shows singer-songwriter Chris Stapleton, left, with muppet character Elmo on the set of "Sesame Street." (Zach Hyman ...