Re "I am so fond of waterfalls": Crikey! Shows how slow I'm becoming. I completely missed the nod to the "Reichenbach Fall" in the Sherlock death leap at the end of the last series. But it has been an age since I read the original story and this version is so hip and postmodern any relation to Conan Doyle's consulting detective is ever more tenuous . . .
Yes, Elementary could be the next series for me to investigate. The thing about The Mentalist is that it also mines the Derren Brown angle. In fact if you're not familiar with Derren-type trickery a lot of the techniques must pass you by.