If you want to specialise you need your masters, as a general nursing staff member in the ER you don't.
Stories: a good day at my ED is when the board is mostly psych patients: suicidal ideations, ODs, manic depressions, bi polar, convinced aliens are on the earth that kinda thing. It makes for a fun day!
I've had 6 patients die on me...4 hospice and 2 MVAs...in one shift
I've delivered a baby
It all turns into the same eventually but the days go fast