Here's an old commercial for Post Crispy Critters with the great character actor (and TV producer) Sheldon Leonard voicing the spokescharacter, Linus the Lionhearted…
…except that if you listen carefully, you may note that there are a couple of words in there dubbed by someone else imitating Mr. Leonard…an oddity I actually noticed when I saw this commercial back in the mid-sixties. I didn't know why then and I don't know why now so your guess is as good as mine. Most likely, something had to be done over and Sheldon was off doing I Spy or something.
