While we were in San Antonio in May, we visited "Bodies... the Exhibition" at the Witte Museum. It was actually very interesting and not "gross" at all. At $20 to visit, anyone iffy about viewing probably would not shell out the cash anyway.
This exhibit is now visiting Indianapolis. The IndyStar is reporting controversy and concerns over the exhibit. First of all, anything the Star doesn't like is suspect for actually being interesting. This is regarding the fact that the origin of every body is not exactly known. If you are interested more, read into their own disclaimers. This is in comparision to Body Worlds, in which are bodies are donated to this program.
I highly recommend a visit to this exhibit if you are close to the area. I believe it was well worth the $20 I had to pay and it is definitely a one-of-a-kind view into how our own body works.