Portal 2: Concluding thoughts

I really enjoyed it. I thought the plot and the action were very well integrated, I liked the new characters, and I thought the humour really worked — I particularly liked Cave Johnson, Aperture's absurdly bombastic CEO: "Don't worry, you're not in the control group. You're getting the real repulsion gel. One poor guy ended up with blue paint. Broke every bone in his body... The scientists tell me I shouldn't have mentioned the control group..."

Plus, of course, a Jonathan Coulton song to accompany the end credits.