I am a high school English teacher, and I want to make my classroom more presentation friendly. I have no white board or LCD projector. I have considered buying the LCD, but now I'm thinking about a flat panel or flat screen TV. My questions have to do with running the signal to the projection system. Obviously, I can run lines all over the classroom to the projector, or the TV. But, what are my other options? If I have an Apple TV and a monitor or TV, can I stream wirelessly from my Powerbook? Can I run a Keynote presentation wirelessly (or other media, or whatever the signal)? Any other ideas? Thanks in advance.