Word of the Day: BEAUFORT SCALE (11D: The higher this goes, the more it blows) - n.
A scale of wind velocity ranging from 0 (calm) to 12 (hurricane).
[After Sir Francis Beaufort (1774–1857), British naval officer.] (answers.com)
This puzzle looks like the top of a can of Kraft parmesan cheese. I was originally thinking of the top of a can of Pepsi, but the line of black squares down the middle looks like it could be part of a hinged lid, where one side is wide open and the other side has little holes for slower pouring. The grid also looks kind of like a button, and kind of like a depiction of two alligators trying to talk to each other across a fence. I thought this was pretty typically Friday in terms of difficulty. I finished in the mid-7s. I honestly don't know how that compares to my avg., as I typically don't speed / time myself later in the week. Love the 9/11/13 outer borders on this one. Up top I thought perhaps I was walking into some kind of "Star Trek"-themed puzzle. The new "Star Trek" movie just came out, so the 10-Across reference to Khan (from "Star Trek II: The Wrath of Khan"), seemed timely, especially directly over the movie-related "QUIET ON THE SET" (12A: Order given before shooting starts).
[10A: "From hell's heart I stab at thee; for hate's sake I spit my last breath at thee" speaker]
The scifi goodness continued with "QUANTUM LEAP" (12D: Abrupt change), but I realized fairly quickly that these answers were not part of any overall pattern. The horrible thing, for me, was a stupid, vexing error. I had FLAT / COATED instead of FLAX / COAXED. I'm well aware that FLAT makes no sense for 31D: Linen fiber, but COATED slid right into 39A: Used butter on, perhaps, and it never ever occurred to me it could be wrong. Seemed more likely that a FLAT was simply some kind of "linen fiber" I'd never heard of. Alas.
Top went quickly. Couldn't get any of the Acrosses, but the Downs came 1, 2, 3. 4D: was a little harder, as I had NOW at first (4D: "That was Zen, this is _____" (bumper sticker)). I'm not sure I've seen the authority of an answer be based on a "bumper sticker" before, but OK. The pun is cute. Ish. The short Downs were also a great help in the southern part of the grid, where CEL (46D: Old Walt Disney production) and TEA (47D: "_____ With Mussolini" (Zeffirelli film)) gave me my first toehold.
Is SUET KOSHER? (22A: Steamed pudding ingredient + 19A: Allowed)
My main trouble spot in the puzzle extended roughly from the JABBED / JAFFA crossing to the heart of the SPACE NEEDLE (49A: Landmark in Elvis Presley's "It Happened at the World's Fair"). Initially thought JAFFA was HAIFA (25A: Mediterranean port since ancient times), and once I had -AFFA, nothing felt right in that first square. Luckily, I finally figured out what the hell 25D: Drew a cross response? was going for. A cross is a punch. A jab is a punch. Ta da. Moving past the FLAT/COATED fiasco, we run into GLARING (33D: Hard to miss) and BLAZE (36A: Brilliant display), which I kept second-guessing and confusing. Perhaps BLARING and GLAZE? Hmmm. Then there's SPACE NEEDLE, which is from a song I've never heard. At one point 80% of what I'd filled in was "E"s, which made parsing awkward. Weirdly, I "knew" ISINGLASS (50A: Common mica). I say "weirdly" because I just don't know terms from the natural world very well (see FLAT/FLAX, above), and "knew" because a. I didn't really know it - more like "remembered it," and b. the spelling I remembered was about three letters too long. It involved way more "G"s and "S"s.
Bullets:
23A: Creator of the "Microsoft sound" played when Windows 95 starts (Eno) - one (ENO backwards) of the many fascinating facts you learn about ENO if you do puzzles long enough
26A: Lantz of the 1960s-'70s N.B.A. (Stu) - a gift to all you "Simpsons"-haters out there. This is what you get when you opt out of "Disco STU." Enjoy.
42A: Comment from the chattering class? ("brrr") - cute, if arbitrarily spelled
44A: Science class decoration (periodic table) - "decoration?" Really. You think teachers put it up 'cause it's pretty or festive?
41A: Some proctors, for short (TAs) - TAs are generally overworked, underpaid, and under-appreciated. One of the many reasons to avoid grad school.
43A: Early TV host Garroway (Dave) - how do I know this?
A long time ago, I was solving this puzzle and got stuck at an unguessable (to me) crossing: N. C. WYETH crossing NATICK at the "N"—I knew WYETH but forgot his initials, and NATICK ... is a suburb of Boston that I had no hope of knowing. It was clued as someplace the Boston Marathon runs through (???). Anyway, NATICK— the more obscure name in that crossing—became shorthand for an unguessable cross, esp. where the cross involves two proper nouns, neither of which is exceedingly well known. NATICK took hold as crossword slang, and the term can now be both noun ("I had a NATICK in the SW corner...") or verb ("I got NATICKED by 50A / 34D!")