Two days ago was a Portal birthday, and I've celebrated it in my way:
http://kanobu.ru/blog/id277733/
That's my Rock Tribute to Portal. There is also a contest here.
Enjoy, and leave some comments out there (!registration is required)!

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=)

By the way, wanna warn you. That's not a spam. It's just a test. It's for science.)))

That still alive version sounds at some points like it was made with Wii Music (if there only was that song on Wii Music) o.O