Just like Photoshop, Adobe's Lightroom has always had a "secret About box" easter egg showing a fun graphic and the development codename (Silvertone for Lightroom 2, Strangelove for Lightroom 3).
When Lightroom 4 was first released in beta, it appeared Adobe had continued the tradition with the inclusion of this hidden Sprocket graphic. But it appears to be missing from the final shipping version of Lightroom 4 and the recently updated 4.1.
So here, for your amusement is the missing easter egg from Lightroom 4. Try to contain your excitement, people.
Related: Photoshop CS6 Easter Egg
Related: The Easter Egg Archive - the ultimate source for easter eggs in software, DVDs, and more