I think ITA's job screening process is quite nice: Post an interesting puzzle and ask anyone to submit answers. Spend as much time on it as you wish.
Their puzzle archive: http://www.itasoftware.com/careers/puzzle_archive.html?catid...
Their puzzle archive: http://www.itasoftware.com/careers/puzzle_archive.html?catid...
I think the reason they don't anymore is that they're a household name. They get tons of applications without any clever tricks. In some ways, I think this is too bad, because it attracts applicants who (in JWZ's words) "want to work for a successful company instead of working to make a company successful." But there's really no way to turn back the clock and make Google hip & unknown anymore.
* How many ways are there of painting the sides of a cube using four different colors?
* Which colors would you choose?