Here's my brag. Its a bit of a doozy (I think)
This was a business trip paid for on a fully flexible PE ticket to MIA. I didn't even know what SEQ 1 meant and so I wasn't really even trying to be first. I was literally so excited to be going to Florida with my work, that I sat there the day before with OLCI open. I had only just signed up to Flying Club (got one of my colleagues to send me a referal link)
So I checked in pretty much at bang on T-24 - and yep, I got the coveted SEQ 1! I noticed it on my boarding card at the time - and I remembered wondering whether it meant I was first to check in... but that wasn't confirmed until later where I saw the "SEQ 1" explained somewhere online.
It gets better though... not only did I unwittingly grab SEQ 1 but as they checked my boarding card at the gate there was a strange beep and the agent paused to look at their screen.
Yep - I had also been given an Op-Up to upper class! I had never flown UC on Virgin before - and I had the best time. Completely fell in love with it. I could not believe my luck as I had no status with Virgin (as a brand new FC member). I must just have been a logistically easy pax to upgrade on the day (full fare PE, alone and no special meal).
Immediately that I came home, I got a Virgin Amex card and started collecting miles, due to this experience.
I'm now going back to Miami in UC using FC miles for my other halfs 40th next year (love Miami!).
The only problem was, the gate agent kept my original boarding card with the SEQ 1 on it (and the new UC BC didn't have this).
Still, it was worth losing the "evidence"...