I'll occasionally freeze half a pot of chili or bean soup or something, but typically I don't do much of this. My dh prefers simple, one-pot stew-type meals with bread every single day, anyway, and I use a pressure cooker, so I can get something done fast when I have to.
My sister, though, has done the once-a-month thing, out of those books, with a good friend. The books give you a whole list of what to buy, and then the order of cooking/preparing. She said it was kind of weird, because you cook like 15lb. of ground beef, not knowing just where it's headed...and then you assemble and freezer-bag stuff. Mostly it ends up being stew/casserole/soup/saucy things. They split the results into 2 portions. They mostly use these meals just for lunches for them and the kids--at least, my sister does, because her dh is a non-vegetable-eating type. He doesn't like anything that doesn't look like a steak or a pizza.
Of course, with dietary restrictions, I wouldn't be able to use the books she has used; they call for a lot of ham, I think.
On that note, though, it would really be neat if someone made a "month of vegetarian" eating, or vegan! It's easier to add meat to recipes, I think, than to take it out. And I am sure someone has done it...