One: Let her near an internet connection. She can't stop herself from checking everyone's blogs, then checking political news, then-- oh my, she can't forget her email! And before you know it, it is 10PM, when Ann turns into a pumpkin and heads for the nearest pillow.
Two: Tell her she never goes out, and it is so-and-so's birthday or this person is leaving town, or that person just got back into town. She is always feeling guilty about these sorts of things, so this is a good tactic, and one her husband employs regularly.
Three: Start watching a so-so new TV show, then shout, "Ann, get down here! The guy on this so-so new TV show who used to be on Firefly just dressed up for Halloween as his Firefly character-- it's AWESOME!!" Actually, just mention Firefly and she'll come peeking around the corner to see what you're talking about.
Four: Take her to Japan. Oh sure, she'll lug that laptop all the way there every time, but she'll never type a word. She'll check her email once if she's lucky.
Five: The Internet. Did I say that already? That's because it counts twice, it distracts her so much.