Pitt has a block schedule for the sciences. We started with 7 straight weeks of anatomy, then switched to Cell and Tissue Physiology, and now we are doing Genetics. Once the basics are out of the way (the end of our first year) we switch to organ based blocks. We do have some smaller classes that meet once a week as well (ethics, biostats, and interviewing/physical exam for this semester), but we focus more on the science class as what we have.
I love the block schedule for being able to focus on one subject matter and only have one test every 2-3 weeks.