Avalon for Winamp

If you use Winamp, then you are sure gonna love this skin which I found. It's created by someone called Jorge Mancheno. This skin has over 50 colour schemes and really intuitive visualizations (there's a guy who moves his mouth and actually appears to sing!). Its visual effects are really cool too and the you can easily customize the glow on the main screen. Also, when you hover over the controls (play, stop etc), the buttons glow (look at screenshot). Avalon also has as many as FOUR winshade modes, so you can use one according to your needs. Here is a screenshot using the default colour scheme.

Avalon: Full Mode

Avalon: "Shuffle" Mode