“Buffy,” “Angel,” and “Smallville” alum James Marsters has landed his most high-profile movie role to date, starring with Hilary Swank in the film adaptation of best-selling Cecilia Ahern novel “P.S., I Love You.” The book is about a widow whose late husband leaves her 10 tasks to complete in order to work her way through the grieving process; Marsters will play the best friend of Swank’s deceased husband.

With a built-in audience of the book’s legions of fans, plus a supporting cast that includes Kathy Bates, Gina Gershon, Jeffrey Dean Morgan (Denny from “Grey’s Anatomy”), and potentially Lisa Kudrow…this is one project to keep an eye on.