I enjoyed this Saturday themeless a lot. We've talked before on this blog about how when the turn comes around, your solving brain changes the way it sees clues in order to accommodate the trickiness you expect to find. Some answers here just popped into place because of that, and it's always fun to see how well you can think like the puzzle creator.
I don't like SLABTOP. But I do like EZPASS. I worked from that end down to the middle of the puzzle. 35A: Game for cats (MICE) was another Saturday mindset clue, as was 36D: French bread (EUROS). With SCADS in place, I got 52A: "Hmm, let me think about that" (IMNOTSOSURE), which I liked very much for the subtextual response. I confidently put in LOSTpet (later changed to LOSTcat before settling correctly on LOSTDOG).
The entire SW fell into place next. It took a long time to parse 48A: Hacker's aid (COUGHDROP) as not referring to computer anarchists, so there my Saturday brain failed me. I also really love 42: Caesarean section? (GAUL), especially since the operation is usually spelled cesarean. My one error came in this area, where I fairly confidently put YENTlS instead of YENTAS. Once again mistaking Barbra Streisand's title role for the Yiddish gossiper. Cute clue there as well at 66A.
The SE wasn't too hard when after I put QUE in at 63D (What's what south of the border?), which revealed DIDSQUAT, a great answer. I made things difficult for myself by putting atpeACE in at 46D: Free from tension (UNBRACE, where the word "free" is being used as a verb). Also I tried "anamUNT" at 45D, only to realize soon thereafter that there wasn't actually room for all the letters I needed. XAMOUNT is one of my least favorite answers in the grid. It feels a little incomplete.
At that point I worked my way down from the NW again. I love LISASIMPSON's clue - a classic Simpson line, and only Lisa could have said it. TITLESONG was surprisingly straightforward. I had Mute for MIME, which I like much better. 16A: Star close to Venus (SERENA) is very a propos, now that she has won her sixth Wimbledon.
Very little to complain about, a lot to love. The shape of the grid is excellent as well, with no isolated sections.