I am hooked as well. It is well done and I've watched every episode so far.
I do however not like that they used the Mirror Universe story as it is just lazy writing to go to a known story line rather than come up with something new. It's like they don't have a unique thought in their heads and have to copy something that was successful in the past. I can't wait for "Superman 283" and "Batman 398" or "Spiderman 941" to come out. They will be blockbusters!