I'm going to take this with a grain of salt...

This isn't the first time we've heard a rumor like this and I'm sure it won't be the last, but this UK site is claiming a Buffy movie is in the works with SMG in talks.

http://www.showbizspy.com/article/183535/sarah-michelle-gellar-in-talks-for-buffy-movie

What's up with the supposed source calling her "Michelle", though. I mean really.