
The right answer is:

Highlander (1986)
Those who knew the right answer were:
• HT:
"There can be only one... Highlander"
• Björn Friðgeir:
"Highlander geri ég ráð fyrir"
• Þór:
"Highlander. Ramirez og McLeod ( Connery og Lambert ) Hvað annað :-þ"
• Bub:
"The Highlander, Sean Connery & Cristopher Lambert."
• Maggi G:
"EASY, Highlander"