I've seen it. It was in church. I could tell you the whole story but I doubt you would believe it. It was about like a chapter from the gospels. You could say the woman was just crazy but her eyes went from clear to blood red when she started acting up and then back clear again after the demon was cast out.
I've personally rebuked a demon in the name of Jesus, and the boy I was praying for slammed into a house like he was thrown by several men when I gently laid my hand on him.
I've also rebuked a demon in a man during a prison ministry session. he came to the meeting naked and tried to break it up. I rebuked him before I really knew what was happening. The words just seemed to come out and then I realized what happened. He ran off faster than he arrived.
There was also a spirit in an old lady at a nursing home. She would follow me around while I was preaching and if she caught me, she would tug at my shirt and say, "what's my name." This went on for a while before the Lord told me to pray and bind that spirit before ever going in the nursing home. Before that day, this lady would always seek me out and do her "what's my name" routine the whole time I was there. She had never spoken any other words to me. The day I prayed and bound that spirit, I walked in and she wouldn't let me get close to her. She backed down the hall and pointed at me saying,"I know you,"I know you."