Stielstra acted on "Saturday Night Live" in the USA,  two mini-series, "Catch-22"(Hulu) and "Commissario Ricciardi", the feature "American Night", with Emile Hirsch, and  and played Ciccio in the Warner Brothers feature "Batgirl". Recently he appeared on the Disney series "Penny on MARS" and in the upcoming biopic of Peppino Di Capri ("Champagne"). He has additionally acted in numerous spaghetti westerns in Spain "6 Bullets to Hell") and Italian thrillers like "They Talk."