Moved from the HoYay.Live Action TV. Some of these examples are not listed on himym subpage. It needs to be sorted out, plus some examples needs context and explanation.
The How I Met Your Mother episode "Three Days Rule" was packed to the brim with Ho Yay. How packed? At one point there's a fantasy sequence of Barney and Marshall cuddled up together in cheerleader's outfits. Barney and Marshall then compete over who Ted would prefer to sleep with. Not to mention the walking, talking Ho Yay generator that is Stan.
Why stop with "Three Days Rule", Ted and Marshall have the bromantic thing down. Hell, the very first episode opens with Marshall (fake)proposing to Ted.
"You just get me."
"I will not have sex with Marshall."
Hell, the very first episode had Barney kissing Marshall (though he did not give the signal!)
Oh, all the guys have subtext together, all the time.
Not just the guys. It's canon that Lily has sexual dreams about Robin. And they've kissed.
We haven't got to 'World's Greatest Couple' yet? Or does it not count because it's intentional?
Most of the ho-yay on this show seems to be intentional.
Barney has quite a lot of Ho Yay with Ted, particularly in the episode 'Rebound Bro', in which it's treated as though they've broken up as a couple.
And the season 6 episode 'Unfinished', in which Barney tries to seduce Ted into taking an architect job at Goliath by using his techniques to pick up women. Which is filled to the brim with Ho Yay as one might expect, and also leads to this gem (expressed again later in the episode by Lily):
Ted: Barney wants me to take the job so bad he's putting the moves on me?
The season 7 episode 'The Rebound Girl' featured both Barney and Ted wishing they were gay, before lamenting their heterosexuality. They then decide to adopt a baby together 'as bros'.
The entirety of this scene:
Barney: And now, to seal this sacred oath, the two ladies will kiss.
Robin: Barney—
Barney: The two ladies will kiss. [Robin and Lily kiss - Lily gets really, really into it]
Robin: Lil... [Lily pulls away]
Barney: And now the gentlemen—
Ted: Dude!
Barney: And now the gentlemen. [Ted and Marshall give each other an awkward peck on the lips, though Ted may be trying to get closer.] I was going to say, "And now the gentlemen bump fists." How long you been holding back that one?
Moved from the HoYay.Live Action TV. Some of these examples are not listed on himym subpage. It needs to be sorted out, plus some examples needs context and explanation.