I've never done it with plain pasta, but lots of pasta dishes freeze and reheat well.
http://www.foodnetwork.com/recipes/giada-de-laurentiis/turkey-bolognese-recipe.html
I make that all the time (use rotisserie chicken in place of the turkey) and freeze the leftovers. I've pulled it straight from the freezer to the microwave and it comes out fine. Not as good as fresh of course, but great when your in a time crunch.
Also, Trader Joe's used to sell pre-cooked pasta in the frozen section - not sure if they still carry it though.