Jason - yeah, I've got the flash from the camera turned off, and I have it opened up to the max to let as much light as possible in. But at that setting (or any other setting for that matter, as I've tried several) I still get some nasty reflections.
Hemish - I could take the glass off the posters and some of the prints by unframing them for the photos, yeah, but that would be a major pain in the ass. And actually, not all of them could be unframed, if you will, because some of them are sericels that were purchased from the Disney Store and the Warner Bros Studio Store (R.I.P.) and came as one piece.
As for the loose figure display cases, no - the way the cases were built/put together, the doors go on before the final side of the case is attached. Thanks IKEA. So I would have to take them all apart to take the doors off, then re-assemble them for the photos, and then take them apart and re-assemble them again to put them back on the walls. And there are 13 of them. And then I'd have to do it all again everytime I updated my collection and needed/wanted some new shots. So, no, that's not an option
But thanks for the suggestions guys. Anybody else?