I think all of the programs listed so far, including Northwestern, are excellent.. we should all feel fortunate. Academic anesthesiologists I have spoken to generally seem to stratify the outstanding programs into 3 tiers...
1) Best of the best: JHU, MGH, UCSF
2) Considered to be Elite programs: Alabama, Brigham, Columbia, Duke, Mayo, Michigan, Penn, Stanford, Wake Forest, U. Washington
3) Other excellent academic programs: Beth Israel, Cornell, Dartmouth, MC Wisconsin, Mt. Sinai, Northwestern, Penn State, UC Irvine, UCLA, UCSD, U. Chicago, U. Colorado, U. Florida, U. Iowa, UNC Chapel Hill, U. Pittsburgh, U. Rochester, U. Texas Galveston, Utah, UVA, Vanderbilt, Wash U, Yale
I think trying to rank the excellent programs from 1-50 is fruitless. If you apply yourself at any of the above programs, you will have great fellowship and job opportunities.