I'm a 4th year anesthesia resident and spent the last 4 months applying and interviewing at a number of programs (all of Texas, NYC programs, Pacific NW, etc...)
As many of you know, there are a lot of great programs out there. In fact, I think it is kind of hard to find a bad program, more likely, it is an issue of "fit" or whether the program that you are looking at matches your expectations of your ideal pain fellowship.
Three negative things that seemed to come up again and again were:
1) Lack of interventional procedures (Iowa)
2) Level of scut work involved or bad hours, call &/or weekend coverage structure (Cornell)
3) Bad location (yeah, I know its only 1 year, but a year in NYC, Seattle, or Portland sure beats a year in Lubbock, Houston, or Iowa City.)
One of the most impressive programs was certainly the Univ. of Washington. Washington had a real sense of history/legacy along with a robust number of interventional procedures, little to no scut for fellows, renowned and talented names for faculty (and this list is still growing,) a brand new pain center opening, and tons of political and financial backing from the UofW and NIH (if i'm correct, their dept of Anes&Pain was #2 in NIH funding only behind JHopkins.) All of that combined with the fact that it is in one of the coolest cities in America made it an easy sell.
As far as top 5, who knows? Those rankings are very debatable and it ends up like an argument over who was the greatest basketball player ever (Chamberlain? Bill Russell? Jordan?) There are many great programs and you can make an argument for any of them being better or worse than another.
Bottom line was that I loved what Washington had to offer and their program really "fit" what I was looking for in a pain fellowship. I put it at the top of my list above several other "big name" programs, recieved multiple offers, and was glad to accept a position at Washington for 2009-2010.