I just saw the TMNT crossover movie this morning and it was better than I expected. Basically, the 2003 Teenage Mutant Ninja Turtles meet the 1980 Teenage Mutant Nimrod Turtles and eventually their original comic book counterparts. Anyway, the 2003 Utrom Shredder discovers that there are multiple versions of the TMNT universe, (the movies, the comics, and both cartoons) and tries going to the original comics to destroy the original turtles in order to destroy all TMNT in existence. Pretty amazing. Oh, and the 2003 TMNT use have their designs from Back To The Sewers except their pupils can't be seen just like in the first 6 seasons.