Portal 2 Appreciation Meme

Happy Birthday, Portal 2!  Blank meme here.

Date of beginning and/or end of first playthrough: According to my email reciept, I bought the game on May 13, 2012, so I began my first playthrough on the 13th or 14th, and it took me maybe two days of playing after work to finish. :)

My friend was poking me to play it because Steam was having a sale, which jogged my memory that I’d gotten the first Portal for free at some point when they were giving it away on Steam, but my computer at the time was not up to snuff, so I never actually got to play it. Then last year, I got a new computer, so I played through the first game over a couple evenings, and immediately bought the second one on sale when I was done.
Favourite line:
“I can’t get over how small you are! But I’m huge! [Laugh turns into evil cackling.]  Actually… why do we have to leave right now?"  This moment, for me, was when Shit Got Real.
Favourite plot device: 
The chassis turning Wheatley evil.
Favourite test chamber: 
Test Chamber 10, the one where you have to take a storage cube and a redirection cube around while flying around on Faith Plates.  I like Faith Plates.
Hardest test chamber: 
Test Chamber 18, the one with a single turret on a platform surrounded by goo.  It took me too long to figure out on my own, so that’s one of the chambers where I consulted a walkthrough.  On the plus side, solving the test chamber triggers one of my favorite pieces of music on the soundtrack. (I Made It All Up) 
Favourite chapter:
The Escape, when Chell and Wheatley are still BFFs. <3
Least favourite part/event:
I hate the one part of Old Aperture right before you reach the hatch to go back up to Wheatley, where you have to use a bunch of different dripping gels.  Anything that involves bouncing off Repulsion Gel to fly through a portal is generally super annoying to me because of aiming issues.
Favourite place in Aperture: 
Hmm, probably the Rat Man den with the radio.
A piece of fanart you really love: 
You Monster, by CrazzyMutt
A piece of fanfiction you really love: 
Blue Skyyyyyyyyyy
Little headcanon of yours: 
Wheatley was human once, like GLaDOS was.
Favourite headcanon from another fan:
Ummmm, I can’t decide!  Everyone’s headcanons are all great.
Favourite achievement: 
You Made Your Point
First/favourite co-op partner: 
Haven’t played Co-op yet.
A funny story from your Portal 2 experience: 
A coworker had seen me post a status about playing on Facebook, and started quoting the "When life gives you lemons…” line, but I hadn’t gotten to that part of the game yet and had no idea what he was talking about. XD
Your own message of thanks to Valve:
  Thank you for making Portal 2!  Chell is on my list of top favorite characters ever, and she inspires me to never give up. Ever.