Sean Penn knows a thing or two about being crazy, and thinks earthquake-ravaged Haiti's just the place for old pal and certified crazyperson Charlie Sheen. Penn says he'd like to "show my old friend the world of needs on the ground in Haiti," reports the AP, and thinks Haiti could do as much good for the actor as vice versa. Sheen had mentioned a possible trip during his nonstop media blitz, and Penn says, "If he chooses to give support, I'll trust it." (More Charlie Sheen stories.)