9. Samantha Who
This show's plot was very nicely thought out. Being about a jerk of a person Samantha who gets into a car wreck and wakes up from a coma with amnesia, being unable to remember her nasty self she begins anew and is nice from them on. I jumped on the Samantha Who train way too late, having only seen it in the last year as opposed to when it aired through 2007-2009. This one wasn't too extreme but when I started watching I wasn't aware that it had been cancelled and didn't get to finish its story out. Sure enough, the second season finale came and went and I was left there, sitting in mystery and concern about where the characters of the show were going to go from here. Was Samantha going to ever remember her real past? It pains me to even talk about it, let alone write about it. This show deserved more.