I tried a great recipe with the tofu added angel hair sharitaki noodles. Sauteed onion, mushroom, red bell pepper, and broccoli in a bit of olive oil. Added the rinsed noodles to the veggies with some grilled chicken strips, and served with a bit of alfredo sauce from a jar (less sauce on mine than the rest of the family). It tasted great and the whole family liked it: My daughter's favorite food is fettuchini alfredo, so this was a great compromise. It was also very quick.
Found the noodles at my regular grocery store, in the refrigerated organic food section. They are definitely a legitimate substitute for pasta.