Reminder + PopUp Blocker = Win
I haven't been this excited about an app in a while. With the release of the new Notifier aka Reminder (NOT Status Notifier) along with PopUp Blocker, I can finally get rid of those annoying apple pop ups.
The new version has support for calendar notifications as well, which was the one thing holding me back from using popup blocker since I wanted to know if I missed anything.
Try it out!