google: sometimes it's just mystifyingly good
As Eric has mentioned, Google has a good number of search parlor tricks built-in that can fast-track you to useful or interesting information. There are also some clever technologies out there for getting directly to flight status information without even going through a search application first.
Sometimes, however, a plain old text search brings back precisely what you want, in so exact a form that your head spins a bit -- two or three complete revolutions. This morning I wondered if someone had put a weight+balance calculator for general aviation aircraft online in javascript or applet form. Seems like a likely application to find on the web. So, a bit optimistically, I typed cessna 172n weight balance calculator. The first link that came back was dead-on perfect; check this thing out. Not only is it the sort of script application I'd hoped to find, but it's also been built for the exact aircraft type i entered in my original query. (Great CSS and JavaScript example, too.) I mean, what's not on the web anymore?