We have been vegan for 6 days now, and so far so good. I have found TONS of amazing recipes and, so far, they have all be delicious. I even made chocolate cake today! I am loving the way I feel. I've been sleeping better at night (with the exception of the random weird dreams), I have more energy during the day, I want to get up and do things, and I am feeling happier. I can already feel such a difference. For once, I am starting to feel more "normal."
Seriously - if you haven't watched "Forks Over Knives," check it out. It is worth a look. There is some serious science in there.