Here's another: (edit, I received an email the code was used successfully)

I did the Hyatt free year thing. I didn't think I'd use it much, as SJC isn't all that busy when I fly. But on 6/13 it was packed. I asked if my Clear card was enough to get me and kids through. Turns out that kids under 12 can go though with the cardholder! Must have passed 400 people in the TSA line.