Jaundice/abdominal pain due to liver failure is an extremely common symptom of the final diagnosis, occurring in virtually all episodes. This is potentially another running gag like Lupus as a suggestion of diagnosis.
Dr. Gregory House:
Trouble in paradise. 2 o'clock.
Dr. Wilson: Wait, your 2 o'clock or my 2 o'clock?
Dr. Gregory House: Over there!
Though this is probably intentional, to create a more visually striking scene, the show quite literally never correctly depicts the proper treatment for a flatline. Flatlines are treated with medication and cardiopulmonary resuscitation (CPR), not a defibrillator. Defibrillators are used to correct irregular heart rhythm (fibrillation) -- not the complete absence of one.
The Bad Hat Harry Productions logo features Harry and his friend at the beach. His friend says "That's some bad hat, Harry". There's a shark's fin on the ocean too
The song used for the intro sequence is Massive Attack's "Teardrop". However, in many European countries an original piece of music by Scott Donaldson and Richard Nolan was used due to rights issues. From the second season onwards a new intro composed by Jason Derlatka and John Ehrlich was used.