I’ve watched “Funny People” more times than I care to count (fun fact: Judd Apatow movies comprise roughly 40% of all cable television programming), but it never occurred to me that Apatow’s raw, shaggy, desperate masterpiece of a third feature was inspired by “The Great Gatsby.” For some reason, I didn’t automatically make the connection between The Great American Novel and a studio comedy in which Adam Sandler has sex with a stranger while pretending to be a Merman. But someone recently pointed out the parallel, and — like a Magic Eye stereogram or that bump on Jean-Claude Van Damme’s forehead — it’s the kind of thing that you can’t un-see.
Ira Wright (Seth Rogen) is our new Nick Carraway,…