Electrapour 1234
Light up your drink!

Attach this spout to a bottle of liquor. As you pour, a LED light will illuminate the liquid. Unlike similar gadgets, it only lights up when liquid pours through it, adding a cool visual effect to bartending during its four-hour battery life. – Video after the jump.

[youtube]http://www.youtube.com/watch?v=ISOgTVJzsXI[/youtube]

Link via Nerd Approved