It was back in March that Tropic Thunder first made it onto my radar. I was skimming through a copy of Entertainment Weekly, and found a full-page picture of Ben Stiller, Jack Black and Robert Downey Jnr in combat fatigues, rifles at the ready, creeping through the brush in a jungle setting clearly meant to represent Vietnam. What struck me, first, was the idea of these excellent comic actors making a Vietnam spoof could be a brilliant wheeze; secondly, the rather jaw-dropping fact that Downey was in blackface.
