My name is Cal Henderson and I worked at Flickr for over 5 years as the head of engineering. I wrote a book called Building Scalable Web Sites which is all about, err, building scalable web sites. These days I'm working for a mysterious new company called Tiny Speck. I'll lose any nerd cred I had, but I primarily use a PC. I've just never really got on with OS X, especially as a window manager.
If most people are using Quicksilver then I think that pretty much points to a badly designed OS. But I do stray into the shiny Apple land. I think perhaps that the wireless keyboard is the best thing Apple have ever made. I have a pair of 30" widescreen Dell flatpanels , which are much cheaper than the apple ones and are just as good. I have a really nice sounding pair of Bose Companion 5's , but they don't work well with OSX - they cut out when switching apps and need unplugging and replugging - gah.
I use a Microsoft optical mouse - super cheap and works great. I mainly got it because it has a dock and supports dual monitors at x I use a pair of Dell 20" flat panels. I never learnt to type properly and am forever mashing it on un-modified keyboards. The main issue I have with my PC is overheating when I play games. For a while I was resting it on wooden building blocks and pointing a floor fan at it, but I've recently got an Antec cooling pad that seems to work fine, once you cover the crazy-bright LED with electrical tape.
I primarily work in my home office, so my laptop stays docked most of the time. Which is just as well, because the thing weighs a ton. Not powerful enough for a desktop, not portable enough for a laptop. I'll just have to avoid leaving the house.
I have an iPhone with me at all times, so that's not a huge issue, but travelling with it sucks. Both my Mac and PC hook up to an array of external disks of various kinds - whatever was cheapest at the time.
