I saw this on DVD as Deranged; in an extra the director said Anacardium (scientific classification for cashews) was the title of the play it was based on, and the working title for the film.
A man looks at a room-to-let, and is absolutely set on taking it. The slob letting the room really would prefer a female to rent, but the other guy keeps making the deal sweeter with promises of extra rent money, and a short lease. He moves in immediately, and talks quite a bit, at times scaring the other guy, and trying to put him at ease. He's got an ulterior motive (one spoiled by the DVD box, oh well).
The bulk of the movie is two guys talking and interacting. There are only a few other actors, and they have very short scenes towards the end. Obviously, such a movie is going to succeed or fail on the strength of the performances of the leads and the dialog, and it is very strong in that regard.
I confess, the ending confused me a little. I think I get it, but I'm not sure. The DVD also includes some alternate endings, one of which is in the movie but not used as the final scene, and the other a little confusing as well too. There were two unrelated shorts on the DVD as well, Rear View Mirror, and God's Little Helper. Both were OK; I liked the former better.
