Bring large pot of lightly salted water to a boil. Cook pasta according to package directions.
Heat 1 tablespoon oil in large skillet over medium heat. Cook bacon until lightly browned, about 5 minutes; add garlic and cook 1 minute more. Stir in tomatoes and cook until heated through.
Tear arugula leaves in half. Place in colander. Drain pasta over arugula (the hot pasta water will wilt the arugula). Transfer to large bowl and toss with tomato mixture and remaining oil.