The Headache [SFM] (Reupload)
Since my original upload ( • Video ) got blasted by a copyright notice for using the Moon theme from NES Ducktales and got blocked in "some" (read: almost all of them) countries, I am reuploading it with the said music replaced with something out of the Valve library - namely the "Tracking Device" song from Half Life (2).
BTW, Gman appears 11 times in this video, excluding the obvious hallucination scene. Just so you know.