Ever since the announcement of the N9′s DLNA support people were looking for a feature called DLNA +PU+ which allows you to send media files to e.g. DLNA-capable TVs without enabling content sharing on your device, giving you a really fine-grained control about what and where to share to.
PushUp is a small utility that hooks into the N9′s sharing framework and allows to you push an image or a video to your TV just like you would with Bluetooth or NFC. Get it on this site (or later through the Nokia Store).
It is an offspring of Korva project, a D-Bus specification and its implementation for media pushing. While still work-in-progress, it’s already fully functional.