Somebody spoiled Identity for you? That's too bad. I almost didn't see the twist coming, and that's always a win.

I liked eXistenZ, but even more I liked Naked Lunch, Scanners and Videodrome, even though they are body horror. Spider was also very good if very depressing. I actually haven't seen any of the other movies you mention from Cronenberg, which is pretty odd, now that i think of it...

I liked Blue Velvet too, but i didn't survive through Eraserhead. I just hated it from the first moments. i should try to watch it sometime. However, I really liked Lost Highway, even though the ending literally made my head hurt. I loved the visuals and the soundtrack was pretty awesome too.