Another question today ...

Do any of your colleagues in the Mac BU have additional blogs that I haven't come across?

Well, I can't speak to what blogs you've come across already, so let's do a list of them.

• Mac Mojo is the official blog of MacBU. Everyone here in MacBU is pretty heads-down working on getting lots of stuff out the door this year, so that blog has been kinda quiet lately. Look there for big announcements from us, as well as tips and tricks for better working with Office.
• Gavin Shearer is a Program Manager for Excel:Mac. His blog tends more towards his other passions, such as all things Disney and the Seattle Storm, but he does occasionally post about Microsoft and MacBU. Most of his Excel-centric stuff gets posted to Mac Mojo instead.
• Schwieb (yes, that's what we all call him) is one of our senior developers. While he doesn't post frequently, his posts are very important. The two blog posts that I link to the most are his: risks and rewards (which discusses, amongst other things, the issue with Office 2008 and Spaces in Leopard) and saying hello (again) to Visual Basic (in which we announced that Visual Basic is returning to the next version of Office:Mac). He's got other greatest hits as well, but those are the ones that I find myself needing to refer people to over and over again.
• Rick Schaut is another one of our most senior developers, not to mention all-around awesome guy. He's been quiet about posting lately, too, but the archives of his blog have all sorts of deep dark dirty technical details, as well as lots of historical information about what we've done and why.

There are a few other blogs around as well, but they're mostly all defunct. I didn't list any blogs that hadn't been updated in the past 18 months or that only consisted of automated postings (Twitter, bookmarks, etc).