As ANDREAS points out, someone with a bachelor's degree in the liberal arts might find a 6-year program to be a good way to go. The alternative, of course, is to complete all of the pre-med science classes as a post-bac, THEN take the MCAT, THEN go through the application year and MAYBE get in. Completing the MD in 6 years straight through could look pretty attractive to some American students. (If I had known about it coming out of my undergrad, I probably would have done it myself!)

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MS (Health Sciences) - Brigham Young University
BA (German Language & Literature) - University of Oregon
Hospital Corpsman (Fleet Marine Force) - 2nd Marine Division

"Pains nor toils nor trials heeding, and in heaven's own time succeeding..."
Wm. E. Hickson (1803-1870)