The ABC has made a significant contribution to television drama with popular series like "SeaChange" and "Brides of Christ", and to comedy with the 1970s hits "Aunty Jack" and "The Norman Gunston Show" and more recently Roy & HG, "Kath & Kim" and "The Chaser's War on Everything". Debate about the role of the ABC continues; many assign it a marginal role, as commercial TV and radio stations are far more popular choices. Critics claim that Australian children view television programs imported largely from the US, however, the Australian Content Standard requires all free-to-air commercial networks to broadcast an annual minimum of 55% Australian content between 6 a.m. and midnight. American dramas and comedies rate well on Australian TV.