The tv show Ghost Hunters on the sci fi channel is very good and interesting.  They explain the equipement that they use and the definitions of the words they use.  They also investigate really cool places like eastern state penitatory in pennslyvania and slater mall in rhode island.  They are places you actually of heard of, that i think is the best part of all.  The people also don't go into to the place to scare people or anything like that they try to hope them understand things going on in their house or place of work.