If you haven't seen it already, try the Alien Planet DVD from the Discovery Channel. The production is quite creative and the graphics are excellent. They solicited speculations from scientists (featured in the film) and also had them speculate on what the film makers created. A clever idea in that it forced them to justify in terms of what we know of life on Earth what they were observing on the hypothetical planet, which was often more bizarre than the website lets on.
http://dsc.discovery.com/convergence...et/splash.html

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"Insignificant molehill sometimes more important than conspicuous mountain." - Charlie Chan