Is crazy the new black? Speculation has surrounded Joaquin Phoenix for some time. Is his hobo-rapper-gone-Charles-Manson act just that — an act a la Andy Kaufman's performance art — or has he lost it completely? His appearance on last night's Late Night With David Letterman (the place where all new crazies make their debut?) recalls a certain evening in 1987 when Crispin Glover decided to demonstrate his high kick a little too close to Letterman's face. Watching these two videos side-by-side, and assuming neither actor was acting (or even if they were!), who's crazier?