There is no question about it, Hollywood definitely has had a very big part of the booming tourism in Iceland.
In the 1985 James Bond movie “A view to a kill” the opening seen is set on the (now) famous Glacier Lagoon. At this point in time there was very little tourism in Iceland but the movie sparked an interest in this area that resulted in the first lagoon boat rides. In the years to come the growth in tourism was small but in 2001 the blockbuster film Lara Croft:Tomb Raider was partly filmed in Iceland and in the following years movies like Die Another Day, Batman Begins, Journey to the Center of the Earth, Prometheus, Oblivion, Star Trek Into Darkeness, Walter Mitty, Thor and Interstellar where filmed here and in the same time tourism exploded with yearly visitors increasing from 300.000 to 2 million (estimated) in 2017.
It is remarkable how popular culture can influence societies.

The Glacier Lagoon in 1984 (still from “A view to a kill”)

The Glacier Lagoon in 2017 (pic by Stöð 2)
Another remarkable thing you might have noticed is the changes in the lagoon itself. In this story from Iceland’s channel 2 (Stöð 2) you can track the changes year by year!
The lagoon only started forming around 1930 and has been growing larger (and deeper) every year. The graph in this story shows the changes in the glacier as it climbs higher inland every year. Which means the lagoon you visit is UNIQUE and will not be the same a year from now.