Celeb Sightings: Scarlett Johansson, Samuel L. Jackson salute 'Captain America'March 14, 2014, 5:50 PM UTCBy TODAYGetty Images North AmericaSlideshow 43 photosCelebrity SightingsStars on the 'Captain America' red carpet, performances at SXSW, Emma Watson at the 'Noah' premiere, and more.Print