It's Gary Blauman!

An uninvited, shocking guest showed up on How I Met Your Mother Season 9. It's Gary Blauman!
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A Special Wedding Guest

A special wedding guest arrives on How I Met Your Mother. "Gary Blauman" is the 21st episode of the show's last season.
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How I Met Your Mother Season 9 Episode 21 Quotes

No more books Ted. I don't like the person you become when you read books.

Barney

Ted: Singles tables are cruel. I mean what if you went to a wedding and there was a table of all fat guys?
Marshall: That would be awesome.