- 18A: Flea market cousin (SWAP MEET).
- 24A: Mickey Mantle or Mark Teixeira, notably (SWITCH HITTER).
- 39A: Fill in at school (SUBSTITUTE TEACH).
- 51A: Currency differential (EXCHANGE RATE).
- 62A: Commercial imbalance (TRADE GAP).
- 1A: "60 Minutes" correspondent (SAFER). I tried STAHL first.
- 44A: Friend's pronoun (THEE). Friends as in Quakers.
- 60A: Smack back? (-EROO). EROO can go on the "back" of the word smack. Smackeroo.
- 64A: "The Sound of Music" quintet (OSCARS). I only know a few things about "The Sound of Music." One is that there's a family with a lot of kids named Von Trapp. I actually had it in my head that there were more than five children and, obviously, Von Trapp didn't fit anyway, but the misdirection definitely worked on me.
- 68A: Golf commentator Pepper (DOTTIE). Yeah, it figures. I've been bragging so much about knowing all the golf answers that we were bound to get one I had no clue about.
- 70A: Texter's sign-off (TTYL). Talk To You Later. I actually tried TTFN first (Ta-Ta For Now).
- 9D: Danced like Bojangles Robinson (TAPPED).
- 19D: Sportscaster Albert (MARV). This is a pretty common "trick": using a person whose last name can also be a first name. I thought of Al Michaels first but don't recall him ever being called Albert.
- 29D: Apple touchscreen computer (IPAD). Want!
Other crosswordese in the puzzle that we've already covered:
- 32A: "__ Gold": Peter Fonda film (ULEE'S).
- 8D: Ticketing place: Abbr. (STA.).
- 57D: Name on a razor (ATRA).
Everything Else — 6A: __ Helens, Wash. (MT. ST.); 10A: Setup punch (JAB); 13A: Pump option (PREPAY); 15A: Tad (IOTA); 16A: L.A.-based oil giant, familiarly (OXY); 17A: Get there (ARRIVE); 20A: Soccer VIPs? (MOMS); 21A: Source of low-alcohol wines (ASTI); 23A: No longer newsworthy (PASSE); 27A: Diet successfully (LOSE); 28A: Counsel (ADVISE); 35A: Helper: Abbr. (ASST.); 38A: Lobbying gp. (PAC); 43A: Modern __ (ERA); 45A: "Then ..." ("AND SO …"); 46A: Karate instructor (SENSEI); 49A: Glued to the tube, say (RAPT); 57A: Shoelace protector (AGLET); 61A: It's wet in Oaxaca (AGUA); 66A: "Awesome!" ("RAD!"); 67A: Botanical junction (NODE); 69A: Poet Lowell (AMY); 71A: Many Miley Cyrus fans (TEENS); 1D: Sends unwanted e-mail (SPAMS); 2D: Road sign symbol (ARROW); 3D: Nuclear pioneer Enrico (FERMI); 4D: Bible letters (EPISTLES); 5D: Toyota __4: SUV model (RAV); 6D: Peruvian volcano El __ (MISTI); 7D: Namely (TO WIT); 10D: Stereotypical diner name (JOE'S); 11D: Forest choppers (AXES); 12D: Unit of computer memory (BYTE); 14D: Slangy assents (YEAHS); 22D: Knife holder (SHEATH); 25D: Budgetary concern (COST); 26D: British art institution (TATE); 30D: Anatomical pouches (SACS); 31D: Return from a cave? (ECHO); 32D: Finds a purpose for (USES); 33D: Dangle a carrot in front of, so to speak (LURE); 36D: Seek damages (SUE); 37D: Buffet heater (STERNO); 40D: Suffix with meteor (-ITIC); 41D: Finish line indicator (TAPE); 42D: Play break (ENTR'ACTE); 47D: Watermelon bit (SEED); 48D: Magnitude (EXTENT); 50D: "... 'What __ boy am I!'" (A GOOD); 52D: Exciting (HEADY); 53D: Adrien of cosmetics (ARPEL); 54D: Colorful quartz (AGATE); 55D: Shroud city (TURIN); 56D: Lets up (EASES); 58D: Fat measure (GRAM); 59D: __ Luck (LADY); 63D: Understood (GOT); 65D: Heavy drinker (SOT).