Cost: $90 million Made: $14.8 million What went wrong: This was the first and last film of Thomas Lee, the nom de flop adopted by a frustrated and embarrassed Walter Hill. Much of the action revolves around the threat of a ''ninth-dimensional bomb,'' which is pretty much exactly what the film turned out to be.
''John Carter'' cost Disney a bundle, but it's still not on the list of Hollywood's most epic flops. (Surprise! ''Ishtar'' didn't crack the top 10 either.)