Arutz-7 reported that Hamas had created a propaganda video showing a staged execution of Gilad Shalit.
YNet reports that Hamas denied any connection with the video.
In this case, Hamas is probably telling the truth. The person who uploaded the video to YouTube called it "Exclusive video of Gilad Shalit, September 2010" but the video is obviously not real footage but a composite. Although he is a fan of Hamas videos, there is no indication that he is a member.
I see no reason to embed it here; but if you want to see it just click on the uploader's YouTube page.