My first time interviewing with Google (in 2008), the press was reporting that they were in a hiring freeze, I had no big names on my resume, so I figured it was basically hopeless and I'd just do the best I could and enjoy my trip to Silicon Valley. After my interview, I was like "Well, I did okay, but you really have to be perfect to work at Google and I wasn't perfect. I'm never coming back to California anyway, so I might as well do all the tourist stuff [I'd held an extra day to interview with Twitter, but they ended up not moving forwards with my candidacy] and just treat it as an all-expenses paid trip to SF." So I just went to Alcatraz and Fisherman's Wharf, treated myself to a nice dinner, and took the red-eye home to Boston. As I'm groggily waking up after a post-red-eye nap, the Google recruiter called me to say "Your interview feedback looks great. We'd like to fast-track your application on the assumption that the hiring committee will say yes."
Been living in California for 11 years now, and I just started back at Google after working there for 5.5 years, leaving, and doing startups for another 6. The most recent round of interviews was the same - I was super nervous for Lyft, Stripe, Coinbase, Netflix, etc. and ended up not getting the job, but with Google it was like "Hey, I worked there once, I know people who also know my interviewers, I used to give interviews like the one I'm sitting in now, what's the big deal?"