Reading through the stack of FCBD books, the best of the batch so far has been:
Blackest Night #0 - Yeah, it's a short story, but it looks promising.
Savage Dragon #148 - Was a fun little tale with the Daredevil.
Attack of the Alternazombies! - Any book that has Jesus Hates Zombies & JHZ featuring Lincoln Hates Werewolves is a winner in my book.
The Avengers - This prelude story was actually pretty good, and Jim Cheung did an amazing job on pencils.
I haven't got to read the rest yet, but I'll finish them eventually.
