Here's a video introducing the housemates, or houseguests as they call them in the US:
http://66.227.61.139/videos/ep1_hgs.wmv
Here's a vid of the exs being revealed:
http://66.227.61.139/videos/ep1_hgs.wmv
Vid of a tour of the house:
http://66.227.61.139/videos/early_show.wmv