Calling all Donna Pinciotti fans! OK, so it's not exactly the same redhead from That '70s Show, but Laura Prepon is back on the small screen with a lighter 'do and a big role — playing Mom on the new ABC drama October Road, which airs a new episode tonight at 10 pm/ET. While she's no Kitty Forman, her 28-year-old character, Hannah, does balance a job, a relationship and parent-teacher meetings. But her biggest struggle is her high-school sweetheart (played by Bryan Greenberg) rolling back into town after a decade's absence and dragging the past along with him. TVGuide.com talked to the fun, enthusiastic Prepon about her "awesome" character, grand gestures and her Jersey upbringing that briread more