NoRaptureBaptist - as a side note from that video...
If you'd like a different perspective on the Brownsville revival from a man who stands up for holiness and repentance, I would recommend you read some books by Dr. Michael L. Brown.
Here is a video of him:
YouTube - Dr. Michael L. Brown on The American Church
Some books:
Amazon.com: Let No One Deceive You: Michael L. Brown: Books
Amazon.com: Whatever Happened to the Power of God: Michael L. Brown: Books
Dr. Michael L. Brown has blessed me in so many ways. His loving but firm criticisms of the American Church, his work in apologetics to fellow Jewish believers (he is a Jewish Christian), his ministry to homosexuals (in how he stands by what the Bible says on that sin, but believes in the power and love of God to totally change individuals) and his explorations of the Jewish roots of our faith have all greatly enriched my walk. He also believes that these moves of God (such as the Brownsville revival) are not counterfeits, but are real.
I have been through this issue many times on here, though, so I will leave the subject alone. However, I will say that God is fully entitled to knock someone to the floor for hours, or even days, if He so wishes. He can bring us to our knees, crying for hours with sobs of repentance, and He can fill our mouths with joy. His presence is Holy, and He is the creator of the Universe. When the infinite touches the finite, such things can occur.
If you were to read up on accepted and fruitful revivals from hundreds of years back to present, you would see similar physical responses to the Spirit's presence. It is in no way simply a modern thing. Only once in my life have I been unable to stand in the Lord's presence: when I got up, I was convicted of sin and apologized to my father who was present (something I had not done previously) and then I was filled with the joy of the God. I worshipped and understood His grace in a new way that night... I don't know why my body fell to the floor in God's presence, but I know that the fruit was good and gave me a hunger for more of Jesus Christ in my life.
Be blessed.