...Sometimes these ads are successful -- just visiting? worked well -- and sometimes they backfire, as in the mocking of Mr. Chrétien's deformity. They seem to be here to stay, however, and we can expect to see more of them. Defending his party's most recent ads, Mr. Ignatieff said that the prime minister must be accountable to Parliament and then added that he, as Leader of the Opposition, is not responsible for the Liberal ad agency or for the music or the voice-overs in the ads. Indeed.