A brilliant music video created in the Source Engine has been released by Paul Marino:
"Using Valve's FacePoser, Marino lip-synced the G-Man to Breaking Benjamin's "So Cold" which was then intercut with events from the game's storyline. A personal project, Marino created the piece as both a reflection on the gameplaying experience of Half-Life 2, as well as an example of Machinima production using Source."
I highly recommend checking this out, for download links head here.