Pretty much any moment where the makeup was thinner on him, which is kind of duh, but still. When the makeup was heavy, Heath was lost in. The mob meeting, the Prewitt siege, the flaming money, but the interrogation, killing Gamble, even when he's in the street facing off Batman on the Batpod, there was more than Joker, which sounds odd to say when Heath was always the Joker, but I really don't know how to articulate the effect.
That's why I prefer the DX head though, I want Joker figures that strongly look like the Joker laid on Heath's physical features. I admit Adam's portraits are beautiful, they're just not for me.