IBM keeps plowing along. Additionally, these are monosyllabic. The AI helps the software pick the correct word based upon context. This can result in an amusing story should a couple of key words be incorrectly 'recognized'.
Interesting storylines develop.
As you might imagine, the software demands good hardware. I run on a P3-700 with 128mb and there are delays after a few sentences of dictation. Since I use a laptop, I purchased the Dragon with a USB microphone which helps with accuracy and background noise. Older software was discrete - the user paused after each word. This tremendously reduced the recognition difficulty but was tricky for the user - staccato speach which could drive a sane person a little nuts.