Just got back from it. I really got into it, loving the humour and the action in equal measure. The only significant character that left me a bit cold was Skurge. He just seemed to float around in the background for a large chunk of the movie, and never really lived up to his potential.
And even though the Dr. Strange appearance seemed a bit tacked on, I still loved it. It showed just what a Sorcerer Supreme (cough Wizard cough) could do against these “gods” “I HAVE BEEN FALLING FOR 30 MINUTES!!!”