This is a story from my glory days as a resident assistent in the dorms:

My fellow RA was awaken one morning by loud banging against one of the doors adjacent to his. He got out of bed and didn’t find anything, at first. Then he found a video camera duct taped above his door. He watched the tape and found a record of a group of students plotting to prank a resident by slamming something against his door early in the morning and use the video camera to capture the residents responce. The only problem is, that the video also recorded them pulling off the prank, and the put the camera right above the RAs door.

We all had a good laugh at watching the pranking residents incriminate themselves on their own video tape.