From the Brazen Head to Apple's Siri, voice and speech recognition has come a long way. Check out the significant developments along the way.
Perhaps the most important advancement was 1978's Speak & Spell from Texas Instruments, which made the concept fun and familiar for millions of children - some of whom might have gone on to create modern voice applications.
The only downside - those dreadful voice-controlled phone systems big corporations rely on to avoid paying humans to answer your calls. While they may work fine most of the time, if you do have a problem it always seems to result in an endless loop that requires you to hang up and start over.