Two things stand out in my mind regarding this episode: House finally taking matters into his own hands to save a stricken musician's life (see exactly what happens for yourself). And House and the musician together at the end, trading jibes in a heartwarming and very funny manner (again, see exactly what happens for yourself). The clinic stuff is pretty outrageous, including a diabetic in denial whom House dresses down so viciously I wouldn't have been at all amazed if the guy had filed a lawsuit. "DNR" also is one of those rare episodes where House learns a thing or two about human relationships the hard way, thanks to the patient.