I don't know why I have been so late to the productivity game by not using ActiveWords product any sooner.  Seriously, if you have not seen this product yet, you better take a look and download the free trial right away.  The concept is simple.  Type in a word and let it trigger whatever action you wish.  Anything from launching an application or URL, correcting misspelled words, or executing custom "scripts" - this is a must-have for GTD enthusiasts!