Of course, now that I've started my whole balancing 3.5 thread, I'd have to give this a second look to see if I need to pull it back. I wouldn't consider it broken cheese, but I also wouldn't want it to be a no-brainer for any wizard or sorcerer.
Given a standard 3.5 game, I think it would be fine. The inspiration for this spell is a conjurer that I'm playing right now. I didn't research it, but it got me thinking about low level crowd control.