iPhone App - Wishlist! Text to Speech!

What do I really want/need on my iPhone? Text to speech! I want text to speech built in at the OS layer, so that every application has access to it! Wouldn't it be great to launch Instapaper or Tweetie or NetNewsWire or USA Today or AP Mobile News (Ok, you probably get the idea) and touch a button and presto.. text to speech, your iPhone is reading content to you! Make it an open API so that third party developers have access and choose how to incorporate this functionality into their application. This is killer functionality...while driving or at the gym... Apple.. are you listening? Please... add to Touch OS 3.0! Please!!