Based on today's puzzle, I'd say Ms. Lempel is a woman of letters. She gives us six theme answers that are common words or expressions that include a letter of the alphabet, redefined with the letters spelled out to make a word. For example, at 29A we have Invoice from a souvenir shop? (TEEBILL). My favorite of the theme answers was CUEBERT, because Ernie. (Wasn't qbert some kind of early computer game?) DEEFLAT is amusing, as a terse performance review, and GEESTRINGS would be funny if someone actually said it under the stated circumstances.
My favorite clue/answer overall today was 66A. Unlike the proverbial rolling stone (MOSSY). I also liked 60D. Maniacal leader? (EGO) - ha! Other EXEMPLARs of fill I enjoyed:
64A. Decisive defeat (ROUT)
9D. Market oversupply (GLUT)
Not much about the puzzle got me IREd up. No one loves an ATTY or AMTS, especially of Rx dosages, but USB a real CAPGUN to make a fuss about a couple of innocuous abbreviations on a Tuesday.