This first post features scans from both the 2008 and 2009 DC Universe Halloween specials.
From the 2008 special comes two interesting scans involving Superman. Jimmy Olsen dresses up as Superman at the Daily Planet's Halloween party in the first one. In the second one, the man himself gives out candy and the kids aren't buying it. Matthew Clark does the pencils here:
And in the 2009 special, Guy Gardner gathers his fellow Green Lanterns for a Halloween shindig. I really wish this story was longer because then we'd get more than a glimpse at the wifebeater-wearing Kyle Rayner and the shirtless Hal Jordan. Mark Bagley did the pencils for these:
Look for the anime/manga Halloween post later today!