At my house we have a 42" LCD connected to a media PC running Vista and use it for things like streaming video & music, playing games, etc. We control the media PC with a wireless mouse & keyboard which is pretty sweet.
But it would be even sweeter if we could control the media PC from one of our laptops (the laptops, media PC & other computers are all running on the same LAN) instead of using the wireless keyboard/mouse. So, for instance, if I find a particularly funny YouTube video I could bring it up on the big screen instead of having everyone crowd around my laptop. Or when I'm trying to write & explain a piece of code, having it show up on the big screen instead of friends/cohorts peering over my shoulder.
Ideally the remote screen control would not require any kind of authentication or login for computers inside the LAN. The process of throwing something to the big screen should be simple, quick and easy to use.
Is anything like this possible? Or am I dreaming?