Here's another recent TV spot that we find ourselves humming long after it ends. AdTunes (via a quick Google search) tells us the song is called "Chugjug" by a group called Family of the Year.
There's also something hypnotic about the visuals as well. Advertising research shows that one of the best ways to sell a product is to make a consumer think others are already using it - we all want to be a part of the crowd and belong. This spot surely drives that point home with style and warmth.
And yes, the Cheese Fry is a proud Advil user.