I love Alicia Silverstone. Her passion for veganism is why she's one of my favorite vegan role models. Alicia wrote a book called The Kind Diet, which basically talks about why she went and stayed vegan, why you should too, how to make the transition, and shares loads of recipes. Here are a few interviews with her where she talks about the book and how veganism changed her life.
For more about The Kind Diet, see Alicia's website, The Kind Life.