WELCOME TO THE NEIGHBORHOOD: JON HAMM GUEST STARS. LIZ LEARNS ABOUT A NEW NEIGHBOR IN HER BUILDING, JACK TRIES TO WIN OVER ELISAS GRANDMOTHER AND TRACY IS OVERWHELMED BY THE "TGS" INTERNS. Liz discovers she has a handsome and newly single neighbor, Dr. Drew Baird, shed like to meet after receiving his mail by mistake. However, in true Liz fashion their chance at getting to know one another doesnt begin so well. Due to Jacks striking resemblance to a Spanish soap villain, Elisas grandmother disapproves of their relationship. Jack is determined to do whatever it takes to win her adoration. Back at 30 Rock, the new "TGS" interns invite Tracy out for a night of partying; but Tracy, unwilling to admit it, cannot seem to keep up with the former Wall Street frat boys.