Adam and I saw this idea on a cooking show on PBS a few months ago, and we've done it twice. It works great! Manacotti noodles are those big tubes that you're supposed to stuff with the cheese mixture, and it's a pain in the neck. The "new and improved" manacotti is to use lasagna noodles. Boil the noodles first. Put a scoop of the cheese at the end of a noodle, and then roll it up. Voila! A tube without having to manuever the tube!
We don't have a particular recipe that we use for the cheese or the sauce (except for my marinara sauce that I already posted) - I guess just look that up for ideas. When we made this manacotti over the weekend, I think Adam just used ricotta and mozzarella mixed with a few herbs.