This is a fantastic way for the deaf to learn not just a foreign language, but also the intricate nuances between British and American English!
The British/American Sign Language Translator program can translate up to 1,000 words among four languages-British Sign Language and American Sign Language (each in video) and British English and American English (each in text).
Simply chose a word from any of the lists (or type it in) and translations from the other three languages instantly appear!