…and whatever else they may be called. 
It may be odd that I can’t remember the specific place of business, and it may have been more than one, but…
“Two for the price of one plus a dollar.”
The older and dumber the better, but new stuff (if it’s not so local nobody but you would have seen/heard/read it) is okay, too.
How quickly can we get to 50 of them? 
Seems to me that a thread like this begins and ends with “Where’s the beef?”
That one made me think of “I can’t believe I ate the whole thing.”
“Can you hear me now?”
“From the valley of the jolly - HO HO HO - Green Giant.”
A little dab will do you
And if we move from commercials to books and entertainment
42
Amen! Beautiful additional source.
I’m tempted to link to that older thread dealing with “That’s the beauty of it. It doesn’t do anything!” (With a nod to Earl Snake-Hips Tucker 
)
"Don’t stick your arm out too far.
It might go home in another car.
Burma Shave"
Oh Calgon, take me away.
Are you a two-dab man?
You’ll wonder where the yellow went when you brush your teeth with Pepsodent!
“You better get Wildroot Cream Oil, Charlie, start using it today…”
Plop plop fizz fizz…oh, what a relief it is.
Please don’t squeeze the Charmin.
Tastes good, like a cigarette should.
Nothing beats a great pair of l’eggs.
By Mennen (Try reading that one without singing it in your head)
“CALL FOR PHILLIP MOR-RISSS!”
My bologna has a first name
its O S C A R
and the ever popular “I can’t believe I ate the whole thing” and the related “Thatsa some spicy meat-a-ball”
“Double your pleasure, double your fun…”
I think this was for Noxema shave cream:
Take it off… take it *all *off!
Yep.
…AS a cigarette should! 
You can tell it’s Mattel…It’s swell!
We will serve no wine before its time.
“Thank you for your support.”