We're big fans of test-driven development (TDD) at RKG.
Writing unit tests at the same time as (or even before) corresponding code leads to a stronger, more robust codebase. Strangely enough, even with the extra work, we find it speeds development. TDD makes debugging easier. TDD also provides definititive documentation of edge-case behavior.
Yes, we're big fans of TDD.
But not so much as Google, it seems.
If this is a gag, then I've been had. But I think it is real.