Memory loss

The whumpee doesn't remember anything about the last two or three days? Great!

Nothing from their lives, not even their name? Awesome!

Maybe they have a head injury, perhaps they were drugged, or even, it could be an effect of a traumatic event. Who knows, we can even get all three at once.

TV Shows
Bones


 * 1x19: Temperance Brennan (Emily Deschanel) wakes up covered in blood, bruised and hurt, without any memory of the past two days. She had been working on a case, and eventually becomes a murder suspect.

Ghost Whisperer


 * 4x08: After dying and entering another man's body (whose soul was already gone), Jim Clancy (David Conrad) doesn't remember anything when he wakes up. He has conflicted memory sensations of both Jim and Sam (the body), and this lasts for several episodes.

Kyle XY


 * The first season's premise is that Kyle is the uncommon and kind young man without any memories prior waking up (naked) at the woods one day.

Dramas
100 Days my Prince


 * Ep 2: Lee Yul (Do Kyung Soo) escapes from am ambush, injured, and is found and cared by a stranger. When he wakes up, he doesn't remember anything about himself. This lasts for almost half of the show.