The worst I've ever heard was the english dub of the জিন তামা movie "shinyaku benizakura-hen"... no offence to whom it may concern but আপনি could have really done a better job XD
I mean really??? take something as epic as the "crimson চেরি blossom" and turn it into "The awesome চেরি blossom"??? This is the reason why জিন তামা shouldn't be dubbed, its just gonna ruin the প্রদর্শনী ⌐.⌐