Spaghetti squash is kind of the best of both worlds.  You get the illusion of pasta with only 1/4 the calories, not to mention the extra vitamins and minerals.  While it takes a little longer to make than regular pasta, it's incredibly easy to prepare; all you have to do is cut it in half and stick it in the oven, and then - magically - the long, stringy pieces practically fall onto your plate