MAJOR PLOT SPOILER. DO NOT CLICK THE CUT IF YOU DON'T WANT TO KNOW.
Kutner commits suicide. He shot himself in the head.
Brief plot summary of Kutner case:
House goes to Kutner's and decides he was murdered. He argues with Wilson about it. Wilson points out that House's reaction is purely because he never realized Kutner was upset. In the end he is sitting in Kutner's bedroom and looking at a photo of him and it's painfully obvious he wasn't happy.
Taub is an asshole and refuses to care about Kutner and focuses on the case. ONTD members suggested it was because he actually killed him. In the end, he is sitting in the hospital and cries.
If you wish to comment on the "memorial" please go to here.
And because there should be a memorial of this:
My favorite Kal Penn picture.
And now maybe he can guest star on HIMYM. We know NPH would approve.
Source: Me and my TV.
It was so obviously going to happen.