Hmm... I didn't notice any HIMYM quotes; although, the quote for Synaptic Interruption does sound like something Barney would say.
Maybe my memory of things HIMYM isn't that fresh anymore.
Yeah, Tachyon is easily one of my favorites... I love scientists and she is also upbeat and her powers are really well embodied by her mechanics. The only problem with Tachyon? You feel like a turtle when you play another character after her.
Now I need to read the flavor text on the cards again... I enjoyed Dr. Horrible but I also have the memory of a goldfish so I did not pick up on that.
Yeah, my mind is also now blown. My memory of HIMYM is pretty good, but I will need to watch Dr. Horrible again.
Oh man...guess I'm going to have to read these cards when I get back home.
Mind = Blown.
Tachyon says "true story" and "legendary" on some cards, which are basically the catchphrases for Barney Stinson on HIMYM.
No, Barney never says legendary (as far as my memory can tell). Though I do remember him often saying "legend, wait for it.... dary."
Also "suit up".
But I can also recall a lot of times where Barney says "legendary" as a single word. So I'd count it.
There are 3 Doctor Horrible quotes. "Dude, you are NOT my nemesis." "Wow, look at my wrist, I gotta go!" and I can't remember the other off the top of my head.
Nice call on there being 3! I didn't notice this one at first.
TACHYON: "So close! Just a few weeks from a real tangible conclusion." (Research Grant)
DR. HORRIBLE: "So close. I’m just a few weeks away from a real, audible connection."
PS: Plus, the use of the word "legendary" is used by Unity on Pushing the Limits.
That's it! That was the other one. I can never remember it.
Christopher is going to be so happy you all found this… 
Ah, wonderful easter eggs. They make the game so good. And I love finding them. When I looked eariler, it was like I could see for the first time.
The HIMYM ones aren't exactly quotes though. I'd just call them NPH's catchphrases. Still, wonderful. I will never look at Tachyon the same way again.
This is amazing. I caught the `true story' one earlier, now I can't believe I missed the rest! Especially the Doctor Horrible lines, which I have seen many times, and the fact that her name is Stinson.
And y'all haven't even found all of the easter eggs on this topic yet :)
Great... now I'm gonna HAVE to do a google search on every flavor text quote...
I've always known this game is just full of easter eggs, but I have no idea how many more there could be that we haven't found. It's a scary thought.
Maybe if you translate all of Haka's quotes from his native language, they reveal all the secrets of the game and its future characters!
Or he could just be screaming "prepare to die".
That seems a more appropriate quote for Legacy... maybe while fighting Baron Blade Sr... "My name is Paul Parsons... You killed my father..."
There's a quote from Ra, I believe, which is entirely in Heiroglyphics. I wonder what that says (if anything) ;).
And I keep thinking that Bunker's Turret Mode card should say "dakkadakkadakka" instead of "buddabuddabudda" ;).
It does say something - I actually deciphered it about a year ago. (Might have even posted it - I don't remember.)
Hint: There's a font for that. 
Sorry I missed this point before, but I'd still count it as a Barney Stinson reference since it's in Tachyon's deck, and they even made a point of making the word bold so it stands out.
Also, I found "suit up" again: it's on Lightning Reflexes. I couldn't remember where I saw it when I discovered this pattern of quotes.
I think Tachyon and Unity deserve their own sitcom together.