Acting · b. 1955 · Baarn, Utrecht, Netherlands Bob Fosko Biography Bob Fosko, alias Geert Timmer, is a Dutch musician, songwriter, writer, producer, presenter and (voice)actor. Acting Blood Group 2020 Mister Twister at the Pitch 2016 Owls & Mice Verhuizer 2016 Madly in Love Mark 2013 Mijn Vader is een Detective: The Battle Koen 2012 Sinterklaasjournaal: De Meezing Moevie Pietje Precies 2009 Hakkuhbar - Vet Heftig Manager 1997 Agent-readable