Too Many iPhone Apps? Just search. - (a tip from my other weblog)

Search your stuff on Google Docs from Spotlight. (I don't use Google Docs, but really like this sort of integration between the desktop and web services.)

See especially the keyword search feature.

Interesting search tool built on top of Spotlight that lets you restrict queries in a simple CLI-ish way.

"It clusters results from major search engines, associates words that appear in previous searches, and keeps a local cache of all the results you click on in a searchable database."