Here's a couple of short anims I made for my fan film series ST:Armada using sketchup models against a green background then superimposed over an animation I made in flash. I learned how to work with green screen form watching a few youtube tutorials
[yt]http://www.youtube.com/watch?v=P0WUg-yMeTE[/yt]
[yt]http://www.youtube.com/watch?v=IRPlQauTvlI&NR=1[/yt]
[yt]http://www.youtube.com/watch?v=P0WUg-yMeTE[/yt]
[yt]http://www.youtube.com/watch?v=IRPlQauTvlI&NR=1[/yt]