Windows 7 - Faster applications/windows switcher, e.g., by typing application's name?

You might try a little app I wrote, Switcheroo, which is an incremental-search task-switcher for windows:

Switcheroo is for anyone who spends more time using a keyboard than a mouse. Instead of alt-tabbing through a (long) list of open windows, Switcheroo allows you to quickly switch to any window by typing in just a few characters of its title. It's inspired by Emacs's IDO mode buffer switching.

There is a free application called Switcher that boasts many features, one of which is a keyword search integration amongst all open applications. You can read a review of the application on Technospot.

The lovely autohotkey scripting language!

#NoTrayIcon 
settitlematchmode, RegEx
regex= i)%1%
sleep 100
winactivate, %regex%
ExitApp
Return

This takes a command line option of what window you want to switch to (case insensitive regex), so is perfect for somebody already using an application launcher such as Executor, Launchy, so on.