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HOW I MET YOUR MOTHER "Do I Know You" (S4E01) Season Premiere

Check out some pictures from HOW I MET YOUR MOTHER's fourth season premiere episode, "Do I Know You" airing this Monday, Sept. 22 (8:30-9:00 PM, ET/PT) on CBS.

I cannot wait to see what Barney (Neil Patrick Harris) has in store for us this season . I wonder how they are going to deal with the story line. It would be funny to see Barney in a committed relationship. Did I say funny? I meant to say Legen....Wait for it....dary.

You can see more photos from How I Met Your Mother "Do I Know You" below.

Read all our How I Met Your Mother coverage here.

Episode Synopsis:
As Stella responds to Ted's (Josh Radnor) proposal, Barney (Neil Patrick Harris) realizes that he's in love with Robin (Cobie Smulders), on the fourth season premiere of How I Met Your Mother.