In the early 1990s, Lychnikoff moved to the United States. Since his subsequent move to Los Angeles, he has appeared in many TV movies and series and feature films. He is noted for his roles as the telegraph operator
Blazanov in
HBO's TV series
Deadwood, as
Russian mobster Vadim Youchenko in the movie
Trade, as an Mi24 Hind Helicopter pilot in ''
Charlie Wilson's War, and as Dima in Battlefield 4''. He also appears as
Howard Wolowitz's Russian cosmonaut crewmate Dimitri in the TV series
The Big Bang Theory. Lychnikoff has also made several stage appearances in Russia and the U.S. His self-written play
The Shelter, which he also directed, was nominated for the Californian
Ovation Award in five categories, and Lychnikoff's performance in it received positive reviews from a number of critics. ==Filmography==