In 1991, Tobias starred alongside Charles Gray in the sci-fi movie "Firestar – First Contact" for Ice International Films. In 1996, Tobias played Rebecque, an aide to the Prince of Orange (Paul Bettany), in Sharpe's Waterloo. In 1998, he played Bassa Selim in Mozart in Turkey. In 2000, he starred in the West End musical La Cava. Three years later, he portrayed Percival Brown in the 50th-anniversary production of The Boy Friend and the next year toured in the rock musical Footloose. In 2005, he finished shooting the film An Airfield in England. He has been acting in a variety of roles for German and Swiss TV and has recently reprised the role of Bassa Selim in Mozart's Seraglio at the Teatro Lirico in Cagliari, Italy. Tobias is famous for his voiceover work and was the narrator on the opening track of DJ Shadow's 2006 album The Outsider.