Another vote for Being Erica. It's a serialized show, so if you do catch it, start at the beginning. I'm still hoping for a TV movie or something.
A big problem with Invasion is that it aired after Lost when people were either still on a high or discussing the show online.Invasion and Surface aired at the same time (along with Threshold) and their serial stories paid off in some cool endings but didn't grab people for whatever reason. I remember posting here during Invasion complaining that nothing seemed to happen. I don't know if that was a fault of the series or this viewer but by the end I was disappointed that we didn't get a second season of Invasion and Surface.