I think a visually rich experience is one of the main reasons for having MediaPortal rather than a generic streaming device. FanArt Handler adds an immense amount to that experience. The sheer volume of art work it finds with minimal fuss is amazing when using a skin that takes full advantage of fanart.
This plugin takes MediaPortal to a whole new level of sophistication and elegance. Not only the music artist and fanart download, but the support for Videos and TV just makes MediaPortal even more impressive!