1. The awesome alternate cover inspired by Mars Attacks.
2. The goofy-ass moment in this panel, where Brainiac 5 briefly becomes Macaulay Culkin.
3. The final few pages, in which the characters are allowed to be characters and have conversations rather than shout exposition.
Alas, I'm not sure how many of these characters will be surviving in this form as we enter into the Post-Convergence DCU. Still, for all its problems, this book wasn't dull. I just wish Jeff Lemire had been allowed to do more to bring these characters to life.