I just had to note that iPhoto has abandoned brushed metal. This is also true of iMovie and iDVD (which also got a spiffy new icon). Each of these applications has adopted the “Them With No Name” that iTunes introduced last fall, retaining the slightly darker appearance of brushed metal, but smoother and without those thick edges brushed apps (like the Finder) have.
I wonder if iCal, Finder, and the other remaining brushed metal applications will all adopt this look by the release of Mac OS X 10.5 Leopard. Only time will tell.