A nice primer on making homemade pasta: On Making Homemade Pasta

It is surprisingly easy once you get the hang of it and it's infinitely better than the dried pasta you buy in the stores. There's a very nice collection of pasta recipes on the same blog here. The Calabrian Hot Pepper Pasta and Acorn or Chestnut Flour Pasta look particularly interesting.

I enjoy making sweet potato pasta. Bake a medium sweet potato (or nuke in the microwave for 7-8 minutes) until cooked completely through. Allow it to cool and the skin will come off easily. Make sure your sweet potato is completely cooled before mix with eggs and flour. You can put it in the fridge to speed things along. Once cooled mix the sweet potatoes, egg, flour ( I use semolina) and a pinch of salt. You will need to account for a little extra flour in your recipe because there’s moisture in the sweet potato.
It adds a lot of nutritional value and fiber to regular pasta and it’s delicious.
I like his idea of adding red pepper. I’ll give that a try with my sweet potato pasta.