I love Opening Day, love the ceremony, love the highlights (not many) on the big screen - yes I cry every year. This year is the year that the kid will learn how to keep score.
The Mariners have a brilliant company called Copacino + Fujikado that do their commercials every year:
My fav is the Ichiro commercial called Working the Zone. I can barely understand a damn word he says - but the comedy comes through.