Such a pleasure to open up a puzzle and see Patrick Berry's byline. I know I'll get at the very least a smooth, fun solving experience, and it can easily go all the way up to five-star incredulity. I especially like seeing his byline on a Sunday puzzle, as I personally tend to need a little something extra in order to keep my attention through the entire solve (one of his Sundays from 2008 is among my very favorite crosswords of all time). I got that today, a clever theme involving the crossing out of letters which doubles as the letter X.
The "replace-a-letter" and "add-a-letter" and "subtract-a-letter" type themes are still fine as long as they produce humorous resulting themers, but I so very much appreciate Patrick's desire to push the envelope. This could have easily been "change a C to an X" type theme for example, but he goes above and beyond to find themers which have a nice base (SMILEY FACES) as well as a funny outcome (SMILEY FAXES). And the X doubling as a "strikeout" in the clue is a pretty cool idea.
I would have liked the crossing answers to display an equal propensity to change (with funny results) when X'ed, though. I found it slightly unsatisfying that TIC didn't become TIX, for example. That would have been much harder to accomplish, perhaps having themers cross? Anyway, could just be a personal desire. Even without that extra layer I still quite enjoyed the solve, because...
Patrick always does such a fine job of filling his grids. Sundays are notoriously difficult to smoothly fill, but he both incorporates strong long fill and minimizes his glue-type entries. You might think the latter is achieved through brute force, auto-fill, whatever, but it's often determined very early on, when the constructors fixes their initial skeleton of black squares. With certain arrangements, you're almost never going to get "good fill," so figuring out that initial skeleton is 75% of the work. Patrick always does a great job of maximizing his spacing, and in this case (10 themers!) it's even more impressive that he has very few highly constrained spots in his grid.
That other 25%... check out the NE and SW corners. To have triple-stacked 8's with TWO themers running through each is no small feat. It is helpful that he can swap LESSER APES with BODY DOUBLE (same with THE ART OF WAR and SKIP TO MY LOU) and I'll bet he tried the permutations to figure out which would give smoother fills. He doesn't incorporate many Scrabbly letters, but I'd much rather see clean fill instead of hiccups caused by a J/Q/X/Z. The resulting corners are clean as a whistle, with just a MLLE and an OCT in total.
Finally, the clues. A puzzle can be ultra-smooth but still suffer if the clues are drab (or too dictionary-ish). This is especially important in a Sunday, where a half-dozen great clues can greatly enhance a puzzle. [Sucker?] for VAMPIRE. The clue for I'M FINE evoking images of "Monty Python and the Holy Grail" ("tis only a flesh wound!"). [Raised on books?] for EMBOSSED. And the beautiful [Give a piece to] for arm ("piece" being slang for gun). The clues made my solving experience even better.
All in all, a wonderful solve.
ADDED NOTE: I can't believe I missed this. The crossed out letters spell CROSSED OUT. So, so, SO cool! And forget what I said about being able to swap out LESSER APES and BODY DOUBLE — making those NE and SW corners even more impressive!