My absolute, 1000% list of dream jobs, were I well and able and everything, from 1-10, with one being the ultimate dream job:
10.Musician, probably singer, much like jewel.
9. Famous Rave Dj
8.Pediatrician/OBGYN
7.Member of Bridge Crew of the USS Enterprise(hey, we are dreaming right?), preferably Ship Counselor.

6. Horse Rescuer, Animal Shelter/Rescue & no kill/forever home shelter
5.Video Game Creator/Storywriter/TESTER!!!
4.Animal Therapist(working with abused animals) & Animal Assisted Therapy worker for children and adults of comprimised mental states(everything from down's syndrome to depression to autism, with a specific focus on autism and down's and troubled teens.)
3.National Geographic Photographer and or journalist/writer.
2. Global Volunteer for both Animal and Human crisis, third world countries, disaster releif, ect. I would go where i was needed at that time.
1. Zoologist specializing in Genetics and Husbandry of Endangered Species and the Building of Realistic Sanctuaries/wildlife parks where animals can live and flourish NATURALLY. I would endeavor to find a way for humans to enter the environment WITHOUT impacting it or the animals in any way - I am a huge fan of those tunnels that go underground and pop up encased in plastic or glass throughout environments. Because lets face it people - lions eat people, and polar bears can be very cranky, and some folks don't have enough common sense, and then we end up having human deaths AND animal deaths due to loose safety rules. Part of this job would also be hosting FREE seminars, conferences, Educational Vacation Safari's/Volunteer weeks.
I think it goes without saying that I would not turn down hundreds of millions of dollars either, but I'd probably use alot of it towards one of those endeavors.
Jobs I would not do if it meant being banished from Earth and dying a strange cold death in space :P :
Military(note that i realize military is needed and am grateful for those who are strong enough to help, I could never. Violence sickens me, and so does war, I would be throwing up in the corner in the middle of operations.
Garbage Man - nuff said?
Police Officer or other sometimes violent occupation.