Extreme Durability Test - Nikon D90 vs. Canon 550D, Will they survive?

Kai from DigitalRev has been doing his "lab-test" research, comparing Nikon D90 durability vs. Canon 550D durability. These durability testing videos are one of the most hilarious reviews I have ever seen. The first time I saw the video, I was laughing out loud.  In those videos, you can see Kai testing the D90 and the 550D to the extreme.Will both cameras works, and even take decent photographs