1. LCD TVs are more expensive, but they use less energy than Plasmas; and vice versa. [source]
2. In the United States at least, Digital TV was introduced to free up airwaves for law enforcement and other emergency communications, among others. [source]
3. In October 2009, Samsung designed their thinnest LCD TV yet - at an emaciating 3.9mm. [source]
4. There is more sex and profanity on cable TV (e.g. HBO) than there is on broadcast TV (e.g. TV3, FOX, NBC). [source]
5. The TV volume goes up during commercials because of the anticipation that viewers walk away from their sets (for toilet breaks, snacks, etc.).