i use them alot, only because i planted 3 habanero bushes after planting only one yielded like ~5 fruits, last summer. So by summers end i had about 50 habeneros. Toss them in chili and the like, they really do have a much better flavor than jalepenos, if you can get paste the heat.
Also, anytime i spatchcock a bird, i rub a salt cure on the outside of it and leave it in the fridge to age for a day or so, you'll never have a juicier roast bird.