I bought a Misto roughly 4 months or so ago and it's become one of my favorite kitchen implements. It is a stainless steel canister with a built-in, easy to prime, pump that you can fill with a bit of your favorite oil.
Why I like it:
a) It was inexpensive. I paid roughly $10 for it.
b) No propellants or additives to my sprayed oil.
c) Because of point 'b' my pans, etc no longer have gummy, sticky, impossible to clean, gunk on them.
d) Because of point 'b' I don't have to wonder what I am inhaling when I use the spray and what I am feeding my family.
e) More economical than regular cooking sprays in the long run.
What I don't like:
Well, only one thing really. I wish it came in different colors because I would love to buy one for other oils that I use. With only one color canister I would get confused and use the wrong oils for my foods if I can't see at a glance which oil I am using.
What do I use it for?
Spray my cooking grates, pans, meats and vegetables, pasta, fish, etc. with Extra Virgin Olive Oil.