Roger Federer and Elmo from Sesame Street seem to disagree on the letters of the alphabet in a Super Bowl ad for ON running shoes.

Join Big Bird, Oscar, Elmo, Bert, Cookie Monster, the Count and many other characters to learn the alphabet and to count with Count von Count, but most of all just have a good time. ABC iview Home ...

Join Big Bird, Oscar, Elmo, Bert, Cookie Monster, the Count and many other characters to learn the alphabet and to count with Count von Count, but most of all just have a good time. ABC iview Home ...