I'm a resident at ORMC and I leave for Haiti on Monday. We have three residents that were down there all last week, and this week a small group of residents, attendings, and nurses from our ED are going. I happen to be on my EMS month, and the medical director gave his blessing for me to go help. The other residents were able to shift their schedules around to accommodate for the days needed. It's the great thing about having residents who are friends, attendings who care, and 12 hour shifts (less days worked = more flexibility)...
I'm sure other programs have people going to help. I know our old EMS Fellow - who I think is at Wisconsin now - has already been down there for awhile, but I don't know if he brought residents. I know quite a few programs had residents go to New Orleans after Katrina.