In no particular order:
1. HELLP syndrome
2. Stage 4 endometriosis during hysterectomies.
3. Repeat c-sections
5. C-sections under general
8. Floppy, grey babies
9. Shoulder dystocia.
10. Severe post-partum hemorrhage, where you end up in the OR after a vaginal delivery.
11. Severe pelvic adhesions while trying to do a surgery.
I've done all of these in the last couple of weeks. Some more than once. Some patients combined several of these into one craptastic case.