Recent obsessive watching of House has taught me something: while whiteboards are the new standard, in relation to blackboards, the smoked plastic board is the cool option.
Also, pharmaceutical drugs are powerful, the human body is complex, and keyhole surgery changes everything. Also, people underestimate Rabies.
[Update: 4 February 2008] One medical inaccuracy I noted in this series concerns MRI machines. At several points, there are interactions between metal and the machine. In one case, bullet fragments that House shot into a corpse; in another, metal-laden prison tattoos. In both cases, there is no effect on the metal before the scan begins. This ignores how the magnet in an MRI machine is always on. The magnetic field is always there, aligning the magnetization of hydrogen atoms. The actual scan consists of radio waves used to alter the alignment of the magnetization. As such, the metal would have been drawn into the bore of the machine as soon as it got near it, not after the scans started.