here is the whole program from the History channel "Life After People". pretty interesting show. each episode is about 10 minutes. The show speculates (with CGI) what would likely happen after Humans just disappeared from the earth. 1 day, 1 year, 20 years, 100 years, 500 years, 1000 years, 10000 years after...

pt1
http://www.youtube.com/watch?v=rpxBZp9_bdM&feature=related

pt2
http://www.youtube.com/watch?v=q5t9NZGTpqA&feature=related

pt3
http://www.youtube.com/watch?v=JI8DW0iNdWo&feature=related

pt4
http://www.youtube.com/watch?v=p4K_XMGQMuM

pt5
http://www.youtube.com/watch?v=nTGxefGKJ50&feature=related

pt6
http://www.youtube.com/watch?v=IxhAd3LJY2Q&feature=related

pt7
http://www.youtube.com/watch?v=otOheW1bSkQ&feature=related

pt8
http://www.youtube.com/watch?v=5GfvMJ8UnjU&feature=related

pt9
http://www.youtube.com/watch?v=KNbAl-314t4&feature=related