Zach Braff and Jason Sudeikis were considered for the lead role but Jeffrey Dean Morgan was cast. Morgan, however, left the project due to scheduling conflicts and Sudeikis replaced him.

Chloƫ Grace Moretz was originally set to portray Millie, but (like Morgan) left the project due to scheduling conflicts; Maisie Williams replaced her.

Justin Timberlake's first foray into musical score composition.

Penny Herschel's (Jessica Biel) date of birth mentioned on the Obituary form is exactly the same as her birth-date in real life

Hong Kil-Dong (1986) is the movie they watch when drinking hot chocolate and marshmallows.