say( "This is a long sentence that goes on and on. It might be the news or weather or an RSS feed of some sort. While I am saying this, the speech recognition control will not pickup anything that I say. This is a bit confusing as the speech recognition control is a dictionary based speech recognition system that only understands certain phrases defined by the user.")
While this is running try to say something that the speech recognition control would normally pickup like maybe the word "Cancel" which would stop the script that is saying the text above with the below script.
Basically, I am looking for a way to use the SpeakStop() command from the speech recognition control (obviously through spoken words) while something is being said by the say command.