I love this gadget. Previously I used a French Press but it tempted me to drink more coffee than I should. I found the AeroPress and it is the perfect solution. It makes one large cup of delicious American coffee (I use a dark roast), I don't need a coffee maker, it is fast and it takes up very little space. So even if I am not plugged in to shore power, I can boil the water on my stove top and still have coffee. It seems pricey but I don't have to buy a cuppa when traveling. In Europe, using it is a cult thing. They have brewing contests.
http://www.aeropress.com/