You can project home videos, movies, tv programs, photos, youtube videos, apps, etc. onto your widescreen tv. You can also access your photos and videos in the Apple icloud through the Apple TV.
Since I got my Iphone last year, I look back and wonder how I ever lived without it. I am so connected now. I see so many others with Iphones, as well, and I am always sharing my favorite apps with friends and colleagues. Wouldn't it be great to share some of these apps with parents and colleagues in some kind of inservice or staff development!