Incredibly awesome moment. Genuinely frightening, and not just for Joker. I was so worried for my crew, especially Chakwas, Kelly and the engineering twins. They weren't trained for combat, and they're nonessential characters so it was entirely possible they'd all be permanently killed off, and I really liked them.
I also liked how Joker and EDI sort've grew together under pressure and developed such trust. Some great character development in this scene, and an important shift of perspective that helps players realize Shep isn't the only hero on the Normandy. None of the remaining crew stood a chance, but they still fought and gave their lives to give Joker and EDI their chance.