I like when they show the unstable patients in the ICU, and they're either intubated and wide awake, not hooked up to any sort of monitoring device, or have no IVs connected at all. Or all of the above. Gimme a break. There was one show I watched where the patient was in a "coma" and had a "machine breathing for her" then they showed the "patient" with just a nasal cannula (but fully sedated in this one).
I like how non-medical tv shows (and books) will show characters diagnosed with major illnesses and then a few episodes later they're fine. Brothers and Sisters seems to be a big offender here, with the little girl getting diagnosed with diabetes, then it was never mentioned again after two episodes, and Kitty having lymphoma and needing a bone marrow transplant (from a half sibling [something that would not happen], and actual bone marrow, not PBSCs [unlikely these days], and the brother just walked in and said "I'm here to donate" and they took him right to OR [he would need growth factor shots and plenty of medical testing himself first]). Three weeks after the BMT she was running for office. She wouldn't have even been discharged yet in reality. Those sorta things just tick me off.