This has been on my "maybe" list for a while.

Advantages I see:
- Crispy "deep-fried" recipes without the deep frying
- More energy-efficient than using the oven
- Easy clean-up: the parts go in the dishwasher

Huge disadvantage for me:
- My kitchen is tiny and I have no space for it

I hope someone who has one will chime in... (ETA) Thanks, Myca!