One's which I remember but not too well.

"I'm Chaquita Banana and I'm here to say."

And, of course,

"Snap is a happy sound, snap is the happiest sound around." for Rice Krispies.

A radio station recently interviewed the man who did the "Ho, Ho, Ho's" for Green Giant vegetables. He was also the voice of Sanp in the Rice Krispies song.

Roger in Baltimore