Most of you probably already know about this application but I found out about it just last night.. and it's amazing! It's called SkyMap. It allows you to hold your phone up to the night (or daytime) sky and it gives you a from my experience accurate representation of just about everything you can see -and some things you can't- with the names. The coolest part in my opinion is the search feature in which you can type in a celestial object, ie. Jupiter, and it will guide you with an arrow until you zero in on it.
Have any of you astronomy enthusiasts (like myself) heard about this or maybe have it? Btw it's free so I didn't think I would be breaking any site rules by posting this. I was just amazed by it- i was outside for about 30 minutes last night playing with it [:p]