Orthopedic bench research is freaking fascinating.
Everything from trying to regrow tissue (cartilage) to more biomed engineering stuff like in-vivo mechanics. I checked out a biomechanics lab yesterday (going to be helping them with a study) and it was awesome beyond words. Live analysis of flexion extension of the cervical spine in multiple planes, calculations of forces on discs, looking at how pathology and hardware affect mechanics.
Ortho bench research and mechanics will blow your mind.
That is, if you're not just going to be snarky about it.
Oh, there was also a 3D printer they were using to model joint prostheses.