I just opened an email from my friend and here's what it said:
"Stupid Kirsten Dunst gave away the villians for Spidey 3 -
topher grace is venom
thomas hayden church is sandman"
That's actually who I was pegging each as. My friend Ed whoe sent the meail thought Grace may be Electro and I was juggling the idea of them both being the same character, a before and after Eddie Brock. Otherwise I could only see Church playing Sandman.
Here's confirmation.
http://www.superherohype.com/news/spider-mannews.php?id=3510