Hershey had one of the greatest commercial jingles ever, as heard during Saturday morning cartoons in the early 1980s:

Hershey is
Real milk chocolate, I love that Hershey bar
Hershey is
That something special no matter where you are
Anytime you want delicious chocolate
There's no need to go looking very far
("Hershey's great!")
'Cause Hershey is the great American, great American chocolate bar.

There was a longer alternate version of the song that I heard on a web page a while back; I'm not sure where, or even if, it was used.

Hershey is
The taste of chocolate that's always lots of fun
Hershey is
The name for chocolate that's known to everyone
Even if you cross the wide world over
It really doesn't matter where you are
You're at home 'cause Hershey is
The great American chocolate bar
Hershey is
Hershey is
The face of kids like you've never seen before
Hershey is
That great big smile when they find out you've got more
Even if you cross the wide world over
It really doesn't matter where you are
You're at home 'cause Hershey is
The great American, great American chocolate bar
Hershey is