Is there an online database for recognizable music?

What I mean is, is there a database that can help you find a song if you have only a very vague idea what types of commercials, TV shows or movies it has been on without specifics? For example, I know that Carl Orff's "O Fortuna" from "Carmina Burana" has been included in almost every dramatic trailer and commercial from "The Thirteenth Warrior" to the NBA Playoffs. I also know that "Sirius" (or the introduction to "Eye in the Sky") by Alan Parson's Project has been used in tons of sports commercials. I know this only because I knew the songs first and recognized them in the advertisement.

Sure, if I remember the commercial an unfamiliar tune is on, it is easy to hop online and find it after some quick investigation. But in this case, I am looking for an upbeat, Indie-sounding tune that has been used in sports equipment commercials that I cannot remember: (Nike, Adidas?). It features a synthesizer that, if I were to describe it, sounded like an emulation of a mandolin done on an 8-bit Nintendo. It kind of cascades down in these reverse appegios and... well, as you can see, I am sounding like a MORON because I have no idea what commercial/TV show/movie it is associated with; but I know that it has been used enough that I am bound to hear it again.

In the meantime, I am left impotent in my search for this commercially musical Holy Grail. By the way, it took me two years to figure out the singer and title for Paul McCartney's "Let 'Em In." The only way I found out was when it came over the radio speakers at IHOP and I screamed like a madman, "Does ANYONE know who is singing this song!" Thankfully someone was there to scratch a two-year-old itch.