Benefit of an EM/IM Program?

hey guys....it's me again...as i go through my "quest" for EM, I was told about various combined EM/IM programs...since i don't know much about this, i am coming to you guys (once agagin) for help!!!!...it is an additional year but you get dual board certified...could you guys give some ideas as to whether this is a good program to go into or a waste of another year....if you could do it over again, would you do both...


ps...didn't know if i should have posted this on IM or EM....