When last we left our favorite group of nerds on Big Bang Theory, Leonard and Penny were planning a ‘real wedding’ that was going to include both of their families. At the rehearsal dinner, Sheldon’s mom and Leonard’s dad left early and ‘hooked up’. How is that going to affect the group dynamic going into this season? Meanwhile, we are going to meet Penny’s mother and brother for the first time. It looks like the families are going to play a big role in the show, at least to kick off the 10th season. Check out the trailer for tonight’s episode below and be sure and tune into CBS tonight at 7pm Central for the season 10 Big Bang Theory Premiere! Join in the conversation AFTER THE JUMP.