For those of you who want to know `How'd they do that?' or who haven't seen it yet, here's a dissection of the Old Spice commercial that aired during the Super Bowl, as described by the guys who created it. (The host is Leo Laporte, from This Week in Tech.)
http://www.youtube.com/watch?v=VDk9jjdiXJQ [edit: Forgot to insert the URL! :-( ]
[edit 2: Apparently the original URL went bad or weird or something... Fixed.]