Funeral in Berlin, in my view, remains the best of the 3 Harry palmer films. Dispensing with the mandatory 60's 'brainwashing'and over-played 'spy' sequences of the Ipcress file. Funeral in Berlin benefits greatly from being shot on location, adding to the authenticity and nervy cold war tension of the original novel. (Actually at least 2 other sub-plots are ditched to save on running time & viewer brain fatigue)The plot, although condensed, remains coherent and totally logical. For anyone wanting explosions, car chases and all the other dreary staples of the 'spy thriller' - forget it. Harry Palmer travels to see his boss on a bus and only receives a gun (at his request) over half way through the film! Watch it for atmosphere, razor-sharp dialogue and a great in-joke regarding Lownbrau beer... Michael Caine is at his world-weary best and supported by a fine cast, all adding to arguably the most 'authentic' spy film of the 60's. as for Billion dollar brain- Have you ever seen it? Listen to the theme tune & turn off!!