1. Melt butter in a large skillet over medium-high heat. Add bread; sauté 5 minutes or until bread is toasted, stirring occasionally. Remove from heat; stir in corn.
2. Sprinkle tomatoes with dash of salt and 1/2 teaspoon pepper; let tomatoes stand 5 minutes.
3. Combine remaining 1/8 teaspoon salt, remaining 1/4 teaspoon pepper, vinegar, and oil in a large bowl. Add bread mixture and arugula; toss to coat. Combine mayonnaise, lemon juice, and chives in a small bowl.
4. Arrange tomatoes and bread mixture on a large platter. Drizzle with mayonnaise mixture; sprinkle evenly with basil and bacon.