Winnie Cooper Alert!!

Danica McKellar ("The Wonder Years") and Busy Philipps ("ER") to Guest Star on How I Met Your Mother!

"Third Wheel" — When two beautiful women show that they are both very attracted to Ted, they take the party to his place, where the gang helps Ted realize that bad luck doesn't always come in threes, on HOW I MET YOUR MOTHER, Monday, Oct. 8 (8:00-8:30 PM, ET/PT) on the CBS Television Network.