I have to say 3 people. Its very hard to say 1.
I would bring back my neice. She passed away a few seconds after she was born & I never got the chance to hold her.
I would also bring back my grandmother. I miss her dearly & I would like to get 1 last hug & kiss from her.
Last but not least my fiancé's mother. I never got the chance to really see her and spend time with her and he is still searching for closure. Having her back would help. I would bring them all back on April 26,2014. My wedding day. To watch me take the next big step of my life.