Digital voice tags

There need to be a setting on digital camera that allows you to add 5-10 seconds of voice when taking a picture.
You push the button half way, say a 'tag' like "Disney Haunted mansion with the family" or "Out with the girls" and it has a relationship to the picture, along with a geostamp.

We have 4 Gig memory cards, so space should be that big of a concern.