Ben Stiller, Robert Downey Jr., and Jack Black

The boys of " Tropic Thunder" are just one entry in the annals of celebrity bromance, beginning with the pioneering friendship of Matt and Ben to the surprising link between Scientology pals Tom and Will. We take a look at the best of them: Three-way bromance What men (and women) won't do for Ben Stiller. In "Tropic Thunder," Robert Downey Jr. plays blackface. Jack Black dyes his hair peroxide blond. And all three get down and dirty in Southeast Asia in Stiller's Hollywood war satire. It's the stuff true bromance is made of. -- Denise Martin and Stephanie Lysaght, L.A. Times
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