I like the unusual layout of the theme answers, and that they occupy both Across and Down space. Really fills out the grid nicely. I also like the detail of not having the letters "IT" appear anywhere else in the puzzle. The IT theme itself is a tad bland, but it's not offensive, and it's well executed, so I'm giving IT a thumbs up. (And a rating of B.)
My favorite clue/answer today is 51A: Gesture of sarcastic support (GOLFCLAP). I had never heard the term before, but instantly understood it and instantly LOL'd. That's some quality material. Also enjoyed CARTRIP, IMISSYOU, SNICKERS, and the LOMBARDI reference. So timely the day after the Super Bowl.