Thomas is a model in Hugo Boss perfume advertisement.
Thomas has played a Nazi officer in eight different films: Stalingrad (1993), U-571 (2000), The Pianist (2002), In Enemy Hands (2004), Der Untergang (2004), Head in the Clouds (2004), Eichmann (2007) and Valkyrie (2008).
Thomas was trained to be an Olympic swimmer and he decided to work as an actor at the age of 25.
Thomas was awarded the Max Ophüls Prize for best young actor in 1991.
His height is 6' (1.83 m).
Thomas: Leaving [home] is kind of a strange thing - the world opens up, but at the same time, it gets smaller. The more you see of the world, the smaller it seems. After I did the film Stalingard (1993), I left Germany, and I did a couple of films in France and lived there for about three years, and a couple of films in Italy, and lived there for two years. Then I came over here. The more you get familiar with different countries, the more you think, "Where am I going to live for the rest of my life?" You think, "OK, Germany sucks - don't want to live there; France, no; Italy - the food is nice, but I don't want to live there." In the end, you have nowhere to go anymore.