Samuel L. Jackson, Scarlett Johannson, Chris Evans & Chris Hemsworth in Marvel's The Avengers Photo credit:  comicbookmovie.com Video: Marvel's The Avengers- Trailer (OFFICIAL) S.H.I.E.L.D director Nick Fury ( Samuel L. Jackson ) arrives at the espionage research facility, which recently acquired an energy resource known as the Tesseract. Dr. Erik Selvig (