- Steven is the grandson of Austrian artist and painter, Siegfried Koller.
- He is the nephew of Austrian musical star, Dagmar Koller.
- Appeared in Hanging Up (2000) with Diane Keaton, Meg Ryan, Lisa Kudrow, and Walter Matthau. Due to Mr. Matthau's poor health, his scene was never completed for the final cut, but is seen on the DVD.
- In Columbia, California, filming a lead role in Jon Dambacher's "Largo for Glass Harmonica". (April 2007)
- Co-starring in the West Coast premiere of Lydia Diamond's play, "The Gift Horse" at Working Stage Theater in West Hollywood, California. (May 2010)
- Playing the role of Bill in Lydia Diamond's "The Gift Horse" at Working Stage Theater in West Hollywood. (April 2010)
- Is currently a candidate for West Hollywood city council (January 2007)
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