That picture in the Osborn manor

[Sarah the nerd]

Here's something I've pondered since seeing the movie for oh, the sixith time:

That picture you can see on the wall...is that Harry's mum, d'ya think? You can see a (much) smaller version of the picture in Harry's appartment back in the first movie, but unforunately I haven't got a picture of that one...

 

[The Joker]

Could very well be. The chair she's sitting on looks like the one they have in their living room. And in Spider-Man 3, that painting is replaced with one of Norman sitting in the very same chair.