Hey guys, I thought you might like to look at my segmented speed run of portal which I completed in 17 minutes and 50 seconds. It isn't a perfect run unfortunately however it is a good run with the method I used.

Part 1: http://www.youtube.com/watch?v=6JC2rAES0es

Part 2: http://www.youtube.com/watch?v=U-mX6Xt4 ... h_response

Enjoy...