To prepare pesto, combine first 7 ingredients in a food processor; process until finely minced. With processor on, slowly pour 1/3 cup water and oil through food chute; process until well blended.
Cook pasta according to package directions, omitting salt and fat. Drain. Combine pesto, pasta, and tomatoes in a large bowl; toss well. Sprinkle pine nuts over pasta. Serve immediately.
Wine note: There's nothing more satisfying than a light pasta dish and a glass of cold, fresh, dry Italian white wine. Pinot grigio fills the bill exactly, and it's a steal, too. For one that's thirst-quenching and loaded with personality, try Alois Lageder Pinot Grigio 2004 from the Trentino Alto Adige region ($12).-Karen MacNeil