The BEST electronic dictionary
I love this dictionary. It has audio support for Russian and English words. You can also look up the case forms for nouns, adjectives and pronouns. The only thing this dictionary is still missing is conjugation for Russian verbs. I would give this dictionary 6 starts if they import something like 501 Russian Verbs by Thomas R. Beyer reference into this dictionary.
Alexandre Skorikov about
Англо <> русский cловарь, v3.19