I see what you did there. You used some of that fancy book learnin' to prove a point, didn't ya?
2010 November 4, Bill Prady, Steven Molaro & Steve Holland, "The Apology Insufficiency", episode 4-7 of The Big Bang Theory, 00:05:03-00:05:19:
Leonard Hofstadter: Of course, we're in different departments. He's an engineer and I'm an experimental physicist. You know, one of guys who examines the building blocks of creation and says: "Hello, maker of the universe. I see what you did there. Good one."
The audience laughter rolls on a bit longer than you might expect and you sense that some are giving the writers an appreciative nod — Oh, I see what you did there.
2011, Lucy Dillon, The Secret of Happily Ever After, Berkley (2011), →ISBN, unnumbered page:
“Of course you did,” said Michelle, grabbing her chance to tease him. That was safer ground. “You hero, you. Did you tell him you'd sacrificed your own tatty sweatshirt?”
“What? Oh, I see what you did there. Back to me doing this for nefarious reasons. I thought we were past that.”
2011, A. M. Harte, Hungry for You, 1889 Labs (2011), →ISBN, page 105:
“I see what you did there. Funny, although perhaps too soon after the quarantine to be making jokes?”
2011, Grant R. Jeffrey & Alton L. Gansky, The Scroll, WaterBrook Press (2011), →ISBN, page 103:
"Wait. I see what you did there. You turned my comment around on me so that it would be an insult. You are one clever gal, Dr. Rodgers."
Oh, I see what you did there! You made a little "bacon" joke at moi's expense. You got a death wish or something, buster?!
2012, Neil Patrick Stewart, Headlines! Headlines! Headlines?: Read All About 'Em . . . And Guess Which Actually Happened, Adams Media (2012), →ISBN, page 68:
It's the sad saga of Captain, a green Amazon parrot that was fond of singing and dancing and had the vocabulary of a two-year-old child. Captain became lost in New York in November 2011, and his owner was frantically trying to find him.
At least the editor at ABC News had a sense of humor about it, when she decided to forgo the word “area” in favor of the funnier, but far-less-accurate, word “aria.” Nice moves, ABC. I see what you did there.