Are AWESOME.
I'm a doctor. We get all the glory. And credit.  And guess what? We only deserve part of it.
I started out in  medicine in the mid-80's, volunteering at an ER. And the biggest shock  to me was learning how much of what happens in a hospital is nurse  territory. Us doctors will see you from 5-30 minutes a day (30 is A  LOT), depending on how sick you are. And the rest is the nurses.
They  come in all shapes, colors, and sexes. Yes, there are a few idiots out  there, that I take shots at in this blog. And there are idiot doctors,  too. Idiots are in all fields, but the majority of nurses are damn good.
They're the ones making sure you get your pills, checking that your vital  signs aren't dropping (and doing what they can to save your ass initially  if they are, of which calling a doctor is only one part). They make sure  you don't fall down and break something. If you start barfing, us  doctors will run out of the room and the nurses will rush in. They  change your wound dressings and start your IV line. They'll bring you a  warm blanket. And clean disgusting things off you. Even if you're drunk.  Or delerious. Or mean. And through all of this they try be friendly  and positive. Even though you aren't their only sick patient.
I  respect nurses A LOT. I learned early on that they're key to being a  good doctor. You piss off the nursing staff, and you'll have a miserable  career at that hospital. Respect and treat them well, and you'll never  regret it. They're as important to being a good doctor as your medical  degree. Maybe more.
If you come out of medical school with a chip  on your shoulder against nurses, you better lose it fast. Because they  will make or break your training, and often know more than you do. Be  nice and they'll teach you. A good neuro nurse is often a better  inpatient neurologist than some doctors I've met.
I remember a guy named Steve, who was an intern with me a long time ago.  He had his head up his ass about being a doctor, and saw nurses as  lesser scum. We were only a few months out of med school, and as we were writing chart notes one morning a nurse came over and asked if he'd go listen to his patient's  heart. With icy contempt, and not even looking up from the chart, he  said "I don't have to listen to his heart, because I looked at his EKG." 
They ain't the same thing, dude. If he'd listened he  might have noticed that the patient had developed a loud murmer in the  last 24 hours. When the attending caught it a few hours later, Steve got his  ass chewed out. If he'd taken the nurse's advice, and listened, he  wouldn't have gotten reprimanded by the residency board.
I  talk about 
my  Bible a great deal in this blog. Here's a quote from it:
 "Working with a good nurse is one of the  great joys of being a doctor. I cannot understand physicians who adopt  an adversarial relationship with nurses. They are depriving themselves  of an education in hospital wisdom."Those doctors are  also depriving themselves of friends. On a shitty day on call, sometimes  all it takes is a sympathetic nurse to temporarily add you to her  patient list, steal you a Diet Coke from the fridge, and let  you cry on her shoulder for 5 minutes. It doesn't make the day any less  busy, but helps you absorb the punishment better.
What got me  started on this?
While I was rounding this weekend, a grateful  patient's family brought the ICU nurses a box of donuts, and so the  staff was picking through them. One said "Oh, this kind is my favorite,  it has cream filling."
And some pig in one of the rooms  yelled "Hey, babe, I got my own kind of cream-filled dessert in here!  Come have a taste!"
You say that to a waitress, and you'd likely  get your ass kicked out of the restaurant.
You say that to a  co-worker, and you'd be fired and/or sued for harassment.
You say  that to a lady in a bar, and you'll likely get a black eye.
And  what did the nurse do? In spite of the fact that the guy was obviously a  detestable jackass, she went in his room, turned off his beeping IV  pump, and calmly told him that he would not talk to her that way.
And  I admire the hell out of that.
Nursing is a damn tough job. And  the people who do it are tougher. And somehow still remain saints.
While this post isn't about them, there are a lot of other unsung heroes who  are part of the hospital team- pharmacists, social workers, nursing assistants, EMT's, respiratory  therapists, X-ray techs, lab techs,  physical/occupational/speech therapists, housekeeping staff. And many more.