This actually happened to me, I woke up in the middle of the night and could hear someone trying to break in, I jumped out of bed and ran down the stairs in my nighty switching all the lights on as I went ran into the living room where I saw two men at the patio doors trying to get in. I picked up a sausage dog draught excluder and swung it over my head while shouting at them to get the fuck away from my house. I must have looked totally crazy because they legged it and by the time DH got down stairs they were gone. We obviously did call the police at that point.
DH now says he wants to get a sign for the house saying "Beware Boudica lives here".