Bleeding Cool recently ran a spoilery piece for Free Comic Book Day as far as the DC Absolute Universe is concerned. And mentioned that DC Comics loves a blackboard. A whiteboard. A chalkboard.
Mass Effect: The Complete Comics is an awesome paperback omnibus with dozens of stories for only $23 at Amazon.
The copy of Superman No. 1 was issued in 1939 after National Allied changed its name to Detective Comics, Inc. — forever known to fans as DC.