First reaction.
It was aight.. Definitely not better than the Civil War trailer. Eisenberg's Lex Luther isn't doing it for me, neither was the banter between Bruce and Clark (the Joker quip was cool though)
The inner geek in me didn't really start cheering until the end when...oddly enough Wonder Woman (whose casting of Gal Gadot was a complete turn off) showed up. THAT was a cool sequence.