Original: Rickman is known for his film performances as Hans Gruber in Die Hard, Severus Snape in the Harry Potter film series, Eamon de Valera in Michael Collins, and Metatron in Dogma.
Simplified: Rickman is known for being in filma as Hans Gruber in Die Hard, as Severus Snape in the Harry Potter film series, as Eamon de Valera in Michael Collins, and as Metatron in Dogma.