An almost unrecognizable Joel ("Cabaret"/"Remo Williams") Grey plays a world-famous researcher who collapses and nearly dies, and then wants House to "off" him on the QT. Not normally a moral dilemma for any veteran physician (I used to be a hospital employee, so I know), this particular case stops House from simply killing the guy as House scrambles to figure out a way to save him. The entire staff must come to grips with the issue of suicide and mercy killing, a common-enough hospital practice but not so common to House's young staff, especially the doe-eyed Cameron. Grey is great as the suffering senior. Again, I am being asked for more lines than I care to write. So in that case, let me point out it will be worth keeping a close eye on Cameron in this episode.