Discovery, History, and Military channel are my top favorit. My favorit show on Discovery is Mythbusters, in almost every episode they blow up something and I like explosions. My favorit is when they crammed a ciment truck full of explosives and dentonated it in a quary. Even though they were several miles away the explosion was so loud the sound recorders couldnt record it properly because it was so intense.
As for history, I love watching the series The Univers. That is just out right awesome and amazing. These people they interview are just mind blowingly smart. Plus I have always been facinated with space and the univers. Several times I had my jaw drop going "NO *&%$ING WAY!!" Its a real trip.
I have always respected and admired our armed forces, and living in San Diego where you will always meet some one from just about any branch of service and with military bases, airfields, and Navel stations, its no wonder. Not to mention my family has a long history in the US armed forces, dating all the way back to the civile war. I have many family members join the service, or supported them as engineers and drafters building equipment for them and what not.