In A Brother's Price Jerin is seen doing chores, and trying to get his sister to feed the baby (something she thinks is men's work), at the beginning.Shaun, being hungover, is oblivious to every sign that things have changed for the worse. The scene is actually played twice: first on a normal day, before Shaun goes to work and then the next day it's recreated frame for frame, only after the outbreak. Shaun of the Dead begins with the title character going through the motions of his dull, directionless life, with only tiny, sporadic hints of the coming Zombie Apocalypse passing a "crazy hobo" on the streets who's actually one of the first zombies, trying to change the channel on a TV without noticing that they're all showing coverage of the zombie outbreak, etc.Deleted but apparently still-canon scenes set during the Tantive IV events show him trying to show his friends at Tosche Station the space battle and being mocked, and meeting an old friend who'd gone to the Academy and is planning on joining the Rebel Alliance (Biggs, who's actually in the final film, and a bit more in the special edition, hence why Luke is so sad when Biggs dies). Only then does he get the Call and go in search of the runaway R2 and also Old Ben.
Happened in Stardust with Tristan in the town of Wall.