"Up All Night" is the eleventh episode of the first season for the ABC sitcom Modern Family and the eleventh episode of the series overall. It premièred on ABC in the United States on January 6, 2010. The episode was written by co-creator Christopher Lloyd and directed by Michael Spiller. The episode features the first appearance of Javier, Manny's biological father and Gloria's first husband, played by Benjamin Bratt.

In the episode, Gloria is annoyed at Jay's reaction to Javier, Manny's unreliable dad, but manages to let Jay allow Javier stay for the night. Jay is seduced by Javier's manner, leading Gloria to take action. Phil suffers from kidney stones and Claire calls the firemen to rush him to hospital. Mitchell and Cameron try to train Lily into sleeping alone but they have hard time doing it, especially Cameron.

The episode was rated 4.1/11 (the highest since the first episode) and received positive reviews from the critics.

Gloria (Sofía Vergara) is less than pleased with Jay's (Ed O'Neill) reaction to the arrival of Javier (Benjamin Bratt), Manny's (Rico Rodriguez) infamously unreliable dad. Gloria talks Jay into allowing Javier to stay the night after Javier shows up a day late to visit Manny. Javier calls in a favor and takes Manny and Jay to a baseball field at night. The next day, Javier shows up with motorcycles and says they are for Jay and him to ride. Gloria forces Manny to go to school and has a discussion with Jay that he is now being seduced by Javier's manner just as she was in the past. Jay denies it but waits by the phone for Javier.

Meanwhile, Phil (Ty Burrell) is suffering from kidney stones. While suffering from the pain, Luke (Nolan Gould) takes advantage to confess to breaking the glass coffee table which cost the Dunphys their hired help when he blamed it on her (and who was deported as jobless). Phil's dramatics leave Claire (Julie Bowen) no other choice but to call for the firemen to rush him to the hospital. Claire dresses up, wearing a revealing top and tight jeans to look nice much to Phil's dismay. Phil ends up in the hospital to have the stones removed. He plans on taking advantage of the guilt Claire feels for flirting with the firemen but it is short-lived, as she discovers the very attractive patients a couple of rooms down that Phil visited while in the hospital.

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