Ever leave an assignment until the night before it was due? You're in good company. According to a post on Quora from former Google designer Kevin Fox, Googler Dennis Hwang was up late the night before Gmail launched, working on the email service's logo.
The logo was designed literally the night before the product launched. We were up very late and Sergey and I went down to his cube to watch him make it.
I had never noticed before how the G of Gmail was such a different style than the rest of the logo, but now that I've focused on it, that G is always going to stick out, the serif-laden man among his serif-less friends.