I’ve used Google Page Creator to create a page that holds my custom searches: Faughnan.com - extended - My Custom Searches. As of today there are four custom searches: my stuff, OS X, “foundational content” (work related – industrial ontology) and “Motorola RAZR V3m”. I’ll probably add more. I use these searches quite often, it’s the best way to work around the “marketing” problem in Google searches (first 10 pages of hits are all people selling something).
If you’d like to add to any of these (excepting foundational content, which is work related) let me know, I can add you as a contributor.