Conan o'Brien Cameo

Conan o'Brien Cameo, Yes, that really was Conan O'Brien standing by the door in MacLaren's bar on Monday night's "How I Met Your Mother."


O'Brien revealed his cameo role on his TBS talk show last June, telling guest (and "HIMYM" star) Neil Patrick Harris that he just wanted to be an extra in the bar.

Also read: Ricky Gervais Shows His Man Breasts on 'Conan' (Video)

And that's exactly what he did. In the scene's final moments, a familiar tall, red-headed fella is enjoying a beer as NPH's Barney leaves.

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