The Toys R Us one is a classic, it's sad that it won't be hammered into the future generations brains along with ours.
There's one for Westside Chevrolet that was local commercial that ran frequently and for many years. They had to change the exit names in the jingle when the roads & freeway expanded right where it is. I can still recite that one, with and without the revised exits. It had a very catchy tune along with it but originally it was "Westside Chevrolet, Katy Freeway, Peek Road Exit, Houston" and then went to "Westside Chevrolet, Katy Freeway, Grand Parkway Exit, Katy". It never changed spots, but apparently changed cities in the jingle, when people started recognizing Katy I guess.
Some that are not easy to forget:
The best part of waking up.... is Folger's in your cup!
My Buddy... My Buddy... wherever I go, you're gonna go, My Buddy.... (and then there was Kid Sister...)
not really a jingle, but the Yo Quiero Taco Bell brings nostalgia for me. As well as the Kool Aid man.