BlackBerry service acting a fool today?

We've gotten sporadic reports today that BlackBerry service -- possibly just BIS -- has been down for at least a period today, which would amazingly mark the fourth time a serious outage has occurred in RIM's fortress in just the past several weeks. That's bad for any device, but it's particularly tragic for a platform that has staked its reputation on reliability. What's everyone seeing out there right now?

[Thanks to everyone who sent this in]