I am spending my lunch time, sans-pickle, but with lots of good People-Picker goodness. I had to share the soon to be classics in the blogosphere links over at Full Metal Architect. I was digging into a lot of this prior to Binging a few additional things related to trusts, forests, domains, people-picker, browse, check name goodness that is in SharePoint. Bing saved the day again(insert them music here). But the blog entries below have made my day and saved me from recreating the wheel.
Additional People-Picker resources