This is by far my most complicated run ever. No wall-jumping or anything like that was used, though I did put a hat on a turret at one point.
This video has a number of small glitches in it, though nothing is ever omitted other than very small details that I simply forgot to activate Fraps for. The only noteworthy omissions are:
At 2 minutes, it looks like I loaded a save file and wound up on the platform adjacent to me. I actually just went through the portal at my feet, so just pretend you saw that and everything will be fine.
When I'm arranging the turret at the closed door, I cut out a couple minutes of boring object manipulation. You can see the desired end result perfectly well, it just seems kind of sudden when the turret suddenly is upside-down.
If you have any questions, feel free to ask!
Oh, and check the rest of my videos for more Portal runs.