Here's a site that has quite a few TVP recipes and tells you more about the product. The site also mentions, "Soy Curls," which are similar to TVP crumbles, but more in the shape of chicken strips, rather than crumbles, or ground meat.
Also, while looking for TVP recipes, I came across a site that warns about TVP containing MSG. That's the first time I've heard of that. I looked on my package of TVP from nuts.com and it only lists Soy Flour as it's sole ingredient...no MSG at all.