The Tech by itself is an average science museum, not too impressive. However, now at The Tech there is a temporary exhibition called Body Worlds 2. This special exhibition shows real bodies of dead people who were preserved using a special technique called plastination. The exhibiion shows full bodies and body parts and demonstrates the structure and function of various organs in the human body.
The most stunning part of this exhibition were various diseased organs, such as kidneys with tumors, smokers' lungs, and aortas with fatty residue. I have less enjoyed the bodies places in various poses, as I do not think these poses serve a real scientific purpose, but only have artistic merit.
After completing the body exhibition, I returned to the main museum and toured the permanent exhibitions. The exhibitions were quite standard science museum exhibitions, though I liked the fact that many exhibitions allowed you to view stuff online after your visit. For example, here is me caught red-handed by a thermal camera (click to enlarge):
Update: Here are some glowing bacteria I have made: