There is already a thread on Scott Pilgrim here in Comics Analysis, right over here:
If you'd like to give a full review of Sharknife, that would be great. But otherwise this is really more of a general discussion type topic.
In non-mod mode now, I haven't read Sharknife, but I obviously think Scott Pilgrim is the cat's meow. The dialogue is great, yes. But where the innovative part comes in, for me at least, is in the story construction. Through his characterization, dialogue, art, etc, O'Malley builds a story that walks this fine line of being recognizable to a wide variety of people yet seems original. And best of all, he can seamlessly move from post-adolescent melodrama to action of the wacky sort, with numerous stops in comedy and slice of life goodness. Looked at as a whole, Precious Little Life is a brilliantly constructed book occupying numerous places genre-wise.
I'll be picking up Vol 2 this weekend, I'm sure a thread will be started for discussing it soon. If no review of Sharknife is posted, this thread will most likely be folded into the Scott Pilgrim Vol 2 thread, that might be better than the Break Room for this topic.