This puzzle played much easier than yesterday's, despite the stacks of 9-letter answers. In the iPad app, the 3x3 squares are circles. I didn't look at the information button blinking steadily at me from the upper right corner, so I didn't understand the SWIRL incorporated in each section until I'd finished the puzzle.
It's a clever concept: four 9-letter ice cream flavor varieties make tiny spirals inside the other answers. The swirls are not symmetrically placed, so you definitely need the circles to show you where they are. I'm not sure that any of the flavors other than Chocolate are ever swirled. Can you get a Rum Raisin or Pistachio swirl? I would never in my life eat Bubblegum ice cream, so I can't even begin to speak on that subject.
Just like on Sunday, these graphical representations create a ton of triple-checked letters. Do they lead to trouble in the fill? Let's CHEX. (Sorry).
The only area which suffers (IMO) is in the middle W section. There you have INRE crossing INULIN, which I would never in a million years get without the crosses. Otherwise, they all work remarkably smoothly. I particularly like 1A: Classic TV show with a celebrity panel (MATCHGAME). No "the" needed in the clue. I give it an A for nostalgia. My first solid answer came at 1D: Thomas who wrote "Death in Venice" (MANN), which once again, allowed me to go with my instincts at 1A.
BEELZEBUB appropriately descends in the NE corner. I very much like the quartet of 9-letter answers at 19A (VASSALAGE), 28A (MORTGAGED), 44A (REMAINDER), and 51A (IMPERFECT).
I don't much like ETDS, OSX, or SWAY crossing WAY. And I will type the remainder of this review in ZAPF dingbats.
I very much enjoyed this puzzle.
(Darn - Blogger doesn't allow that font.)