Excellent point there, Katherine. The character in KU would not refer to Jack and Ennis as "Jack and Ennis" but as "Gyllenhaal and Ledger," as he does.
And I absolutely agree that the LA "joke" was offensive on a few different levels. Again, I lost all (or most) respect in him for that one, and I have a hard time believing that Jake actually "loved" it (but if he did at the time, I think he's smart enough to have realized after the fact, perhaps, that it was not such a terrific idea after all). He appeared genuinely surprised at it at the time. He's a great actor of course, but I don't believe he was pretending to be stunned by that one. If anything, he might have told Lance he "loved" the bit with the T.O. book when he came out to present, which, though also offensive for the same reasons, wasn't nearly as bad.
Or maybe it's just all wishful thinking on my part.