“Observer” is also down with Spencer and the gang:

If this is the Coen Brothers, it wouldn't be the first time that they used a pseudonym. They have edited almost all of their films together under the pseudonym of Roderick Jaynes. They've even gone as far as to write introductions to some of their scripts under his name. So I wouldn't hold it past them for them to do this.

Remember Scott? He saw the play and sent in his two cents, saying that he was convinced “Anomalisa” had been written by Mr. Rock ‘n' Roll. Now he's not so sure:

I wrote you a few weeks ago with a report about the closing night performance
of Theater of the New Ear. When I wrote it, I said that I was convinced that
Francis Fregoli was Charlie. I have to admit, though, that Spencer's theory
(which you just posted) that it is, in fact, the Coens is pretty persuasive.

I get your point about the Coens not usually hiding behind pseudonyms, but,
then again, their longtime editor Roderick Jaynes is really Joel and Ethan. So
they do have a precedent for using an alias.

So now I don't know what to think. (Which I'm sure is the point.)

Jason, meanwhile, throws a spanner into the works and chips in with a completely new theory:

I'm not an expert on Kaufman or the Coen Bros., just a fan. I was at the Friday night UCLA performance of “Theater of the New Ear” Not sure if anyone has already shot this idea down, but has anyone floated George Clooney as a possible author of “Anomolisa.” It may be a completely cracked up guess, but I had a rather surreal experience when the play started. I am from Cincinnati and live here in LA with my girlfriend who is from Tennessee. When the play started it was almost an homage to the Nati. My girlfriend and I looked at each other like WTF. The play mentions all the typical crap that every person from that venerable city will tell you to do, eat and see while your in town. My gf, having heard this same shit from me, looked at me like I had three heads. That alone doesn't mean much, but this was a story about someone who has become famous and comes back to his hometown Cincy and hooks up with a girl who is a fan of him and specifically in adoration of his looks. Add the house in Italy to the Italian name, a long history with the Coen Bros. and the fact George is writing and directing films. And on top of that you add that Clooney and his family are from just across the river in Kentucky (where the Cincy airport is and the story starts) and his dad or uncle(not sure which) was a weatherman and newscaster on the local news forever. Whadayathink?

George Clooney? I think it's not as strange a theory as it may sound, since Georgie boy has been in cahoots with the Coens before. And we all know Charlie wants to kick his ass on acount of Confessions of a Dangerous Mind, so hiding behind a pen name and staying the hell away from UCLA would be the way to go.

BUT. Along come Jesse and David with the definitive hallelujah no-kidding hot diggety answer to our conundrum and source of sleepless nights, via this thread at A Special Thing.com. Remember Dino Stamatopoulos? Sure you do, I mentioned him a while back - he worked with Charlie when Charlie was in TV, on shows like The Dana Carvey Show. Queried about “Hope Leaves” and “Anomalisa,” Dino says:

I saw it here in LA. Both plays were his and they were both great,
although I was particularly effected by the first play, “Anamolinda” I
believe? He had to write and direct that one because the Cohen Bros.
couldn't do their play here and Charlie's original piece needed to
reference the previous one. It was an amazing night.

On top of which, Dino also mentions that he's considering asking Charlie to write an episode of his clay-animation television show Moral Orel.

SO. Another mystery solved, thanks to BCK's agents and correspondents. We have eyes and ears everywhere, including on our elbows. Next week we'll figure out what Lord Lucan's been up to lately.

Before I split, two pics taken at the end of UCLA's “New Ear”:

 From left to right it's Marko Costanzo (the sound effects guy, black t-shirt and pants), Hope Davis, Peter Dinklage and Meryl Streep. Look at the two pics one after the other, really really quickly, and it's like they're taking a bow BEFORE YOUR VERY EYES. Thanks to Enoch for sending those in.