Given that brat-packer Emilio Estevez opted to go with a different last name when he began pursuing an acting career, not everyone knows that he's also the son of American film great Martin Sheen (and thus the brother of the perhaps less-great Charlie Sheen).

And though they were never quite as high profile as 1987's "Wall Street" (the biggest Martin-and-Charlie collaboration), Martin and Emilio have worked together on quite a few projects. All of them have taken advantage of their familial relationship somehow.

They've taken on the natural roles of father and son in a number of films, most recently (and heartwarmingly) in the 2010 indie drama "The Way," about a father recreating his dead son's pilgrimage through Spain. They also played father and son in the less-heartwarming 1996 drama "The War at Home," about a Vietnam veteran's difficult relationship with his stern father, and 1982's "In the Custody of Strangers," about a troubled teen left in jail overnight as a lesson by his parents.

However, filmmakers have also taken advantage of the fact that Emilio looks more like his dad than Charlie does. Emilio played a young version of his father's character in the 1989 political-drama telefilm "Nightbreaker" and in an episode of Martin's hit TV series "The West Wing" in 2003.

Interestingly, all three of them teamed up only once. Both Emilio and Charlie, 11 and eight years old at the time, were extras in Martin's 1973 film "Badlands."  

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