At the end of the episode, when they go to see Jess at the hotel, she is wearing a striped dress. This same dress was seen in Season 5 Episode 4, when "Brandon" holds up the dress. Jess is supposed to be sequestered at the hotel at this time, and there is no way she would've been able to retrieve this dress.
Nick's cousin met Schmidt in Chicago at Walt's funeral and had a fight about removing the chain from Walt's neck at the funeral home. He acted like he had no idea who he was. Also, when Schmidt is describing "Nick's Life Plan", Schmidt says Nick's little boys name will be Geo. However, earlier Nick told Jess, their son had to be named Reginald Vel Johnson because he lost a bet Schmidt.