Several episodes have been banned due to different reasons. In the first series 3 where banned, one shown later as a cut 'lost episode' in the US. 'Beauty and the Beach' featured James with prosthetic breasts in order to win a beauty contest, 'The Legend of Dratini' had many uses of guns in it and a reference to Adolf Hitler. This episode was the one where Ash caught his Tauros, which is why nobody in other countries understood how he got it, and finally, 'Electric Soldier Porygon' which had a sequence of red and blue flashing lights which caused japanese children to have epileptic fits. In the Johto saga, 'The Ice Cave' was banned because it was due to be shown when there was that SARS outbreak a couple of years back and because Team Rocket gave Brock a cold, it was deamed inappropriate. Also Jynx featured in this episode. I also think that a few episodes in Hoenn where skipped because they had Jynx in them aswell. Phew, thats all I can remember without researching it again. Call me a PokéNut but I can just remember this crazy stuff! Hope this helps!