The debate about Joaquin Phoenix's strange behavior as of late continues. Refusing to believe it's a hoax, despite a camera crew following him around for a documentary, the LA Times is going down the mentally ill route. So far the most talked about display of his new bearded, mumbling persona has been from his appearance on Letterman (which just re-aired last night). The psychiatrist the paper talked to said "much of Phoenix's behavior on Letterman hinted at mental illness, such as wearing sunglasses, which may suggest paranoia. 'There is something wrong. And it's beyond drug abuse.' The public should refrain from mocking Phoenix." So basically he's like 0% crazy, 80% beard and 20% sunglasses. MTV News asked Phoenix's publicist about the Doc's diagnosis, which she labeled: "wildly inappropriate."