I still haven't started my wife's iBook hard drive replacement due to the fact that I'm just dreading doing it. I'm tentatively putting it off until after Christmas when I'll have more dedicated time. In the meantime...

Internet Explorer for Mac
It seems that Internet Explorer for Mac is finally going to be cancelled:

Internet Explorer 5 for Mac

I'm never really used it, so it doesn't really matter to me personally, but it is really a bit of an end of an era.

coconutIdentifyCard
In the "Fun Utilities" department, coconutIdentifyCard gives you detailed information on where your Mac (and/or iPod) were made, and is available here:

coconutIdentityCard tells When and Where your Mac / iPod was born - New Launches

Tiger-style menu bars in Cocoa
And finally, if you're looking to add the Tiger style menu bar to your Cocoa application, it's simply. In Interface Builder, simply go to the Inspector for the NSWindow in question and under "Attributes", select "Unified title/toolbar look". Voila.