Clinical: I think they have good clinical facilities albeit old. They are building new cancer center to be opened in April 2009. The school has tremendous growth potential. To be honest, I think almost all schools are equal when it comes to clinical. Yes...there will be some variation, but LCME does a good job of making sure all the schools are training next generation of physicians adequately. I am not say that you will get the same education if you go Harvard (or any other top 25 schools) vs. Penn State. I, however, am saying that the differences will be minute and non-significant in grand scheme of things.
Research: They have strong research aparatus. Plus one can conduct research at the main campus which as I understand is amazing. I am sure Mafia can provide more info on that.
As clinical setting is almost out of the equation, the thing does come down to research and location. You need to be comfortable with the location if you plan to spend > 8 years. There is also a great upside to this as well: you can live very cheaply in Hershey. One can buy a decent house for less than 150k...which is a steal IMHO (I used to live in Cal and DC...two of the most expensive markets).
Hope this helps.