I think a better and easier to answer thread may have been "What specialties & procedures will NOT be hot in the future of medicine?".
- primary care specialties (can be largely replaced by allied health practictioners @ $0.25 on the dollar)
- hard copies of imaging studies & paper medical charts
- traditional diagnostic arteriograms
- Medicare/Medicaid dependent specialties like gerontology, IM, FP, renal, Med-onc, and even large parts of orthopedic surgery unless there is some unforeseen bailout of the upcoming baby-boomer driven healthcare financing nightmare
- reconstructive microsurgery for breast CA (too much time for too little money for too little benefit in most)
- hand surgery (too much trauma & night work now involved)
I would encourage everyone to read the New York Times columnist, Tom Friedman's new book "The World is Flat"
http://www.thomaslfriedman.com/worldisflat.htm about the economic effects of globalization.
It's a real eye opener on just how replacable many services are in the information age. You can apply some of the lessons to medicine as we've seen the rise of lower-educated workers providing services that were more exclusive previously (CRNA's, NP's, RN/LPN's, etc..). This certainly applies to my field (plastic surgery) as other MD lesser trained providers (ENT, Derm, FP, Gen. Surgeons, OBGYN's, ER docs, etc..) have tried to capture part of the aesthetic medicine field. This has even trickled down to the next level as a number of nurses have tried to establish practices of injectables & non-ablative laser/energy treatments.
I know American Radiologists have fits when this type of globalization has brushed up against image interpretation (which is an ideal service for being done remotely) but there's only a few hurdles keeping the floodgates open from mass outsourcing in this area and I think the large 3rd party payers in US healthcare (Industry, the states, & the feds) can overcome the potential liability & accredidation issues involved quickly if they thought the cost savings would be substancial