Well, yes, on mac there is a program which will let you see what is on the iPhone when it is connected to the Mac or PC.
Heres an example:
http://blog.iphone-dev.org/post/66024815/yellowsn0w-live-demo
On there (thoes videos..)
Heres an example:
http://blog.iphone-dev.org/post/66024815/yellowsn0w-live-demo
On there (thoes videos..)