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How I Met Your Mother's Ted Finds that '70s Gal Groovy

One thing seems fairly certain — she's not the mother. Still, Laura Prepon is poised to have a very good time guest-starring on CBS' How I Met Your Mother later this season. That gal from That '70s Show (as well as October Road) has been cast in the role of ...

Matt Mitovich

One thing seems fairly certain — she's not the mother. Still, Laura Prepon is poised to have a very good time guest-starring on CBS' How I Met Your Mother later this season.

That gal from That '70s Show (as well as October Road) has been cast in the role of Karen, a rather infamous ex of Ted's. Yeah, it seems these two have been off and on and off again countless times since college - to the point that Lily visibly seethes at the mere mention of repeat-cheater Karen's name.

Now, why do I dare venture that Karen isn't the mother? Well, 1) the show isn't called I Had Already Met Your Mother, and 2) Prepon is only around for two episodes, not five as reported elsewhere.

But I like this casting, especially given the somewhat naughty nature of Prepon's role. Are you willing to let her break Ted's heart one more time?