This has to be one of best fan made trailers ever to grace youTube. Apparently this guy Wormy T photoshopped the actors from other films to look like Liono, Panthera and Tigra etc etc. Just looking at the cast he picked, he hasn't done badly.
Prediction by next week is that it has 2 million hits and gets film geeks wetting themselves over whether it could fuel movie studio's into actually thinking about making it. Last i heard, Thundercats was going to be a CG film in 2010...but who knows now???