While it may not be essential to the making of a classic anime, there is no denying that a classic opening theme song can launch an anime series into something legendary. So important is the opening theme to an anime, that a great song can make an otherwise forgettable series into something memorable all on its own - you may not have seen Mobile Suit Gundam Wing, but you probably recognize the opening theme, Just Communication, by Two-Mix at the various anime conventions you've attended throughout the years.