Pokemon for Neo's reasons.

House because they changed cast and I kind of just lost interest a bit during season 5. I used to be addicted to that show, too. Now I still haven't even seen seasons 7 and 8 at all!

New Girl, lost interest half way through season 1 because one of the main characters annoyed me and also Zooey's character went a bit overboard with the "cute & awkward" stuff.

Falling Skies... I don't know why, I still need to go back and watch the last season.