Parts two and three of Portal 2 E3 demo revealed

Valve's released two more videos of the E3 demo of Portal 2. It's mint stuff. Get it after the break.

The two clips show off some of the new puzzles and contraptions that await you when you play the game next year. The first one features the Excursion Funnel, which lets you float in the air.

The other shows off something called "Aerial Faith Plates," which throws you about like a ragdoll. Wheee.

This looks just as awesome as the first game, going off by the videos. You'd be a bit stupid to miss out on this one.

Get the lot below, thanks to D'Toid. Catch the first part here.

Portal 2 releases in 2011 for PC, 360, Mac and PS3. The latter of which will have Steamworks support for automatic updates and more.