
The right answer is:

Iron Man (2008)
Those who knew the right answer were:
• Yngvi:
"Ironman"
• Kári:
"Ironman"
• Gummi Jóh:
"iron man"
• Friđjón:
"easy peasy Robert Downey Jr. in Iron Man"
• Sindri Ká:
"Iron Man"
• Hannes:
"Fyrsta sem mér dettur í hug er Robert Downey Jr. í Iron Man."
• Lee Roy Tipton:
"Iron Man"
• Radar:
"Hmmm ţetta líkist Iron Man"
• sfjalar:
"Ironman"