Combine olive oil and vinegar. Place steak in plastic bag or glass container, pour marinade over and toss to coat. Marinate for at least 1 hour, up to overnight. Grill to preferred doneness.
Combine first three ingredients. Place shrimp in shallow glass container and add marinade, toss to coat. Allow to marinate 30 minutes, turning once during that time. Thread shrimp on to skewers and grill over medium-high heat, 2 minutes per side.