We got the larger George Foreman grill very recently as we were having our kitchen re fitted and were without hob and oven for a short period of time. It's absolutely great, so far we have cooked steak, salmon, chicken and my son likes to cook peppers and onions on it. My husband is quite meticulous about cleaning it as soon as we have eaten. Of course things like steak and salmon smell quite pungent and that smell will linger just a little when you start cooking something different but then the aroma of the new whatever kicks in. In spite of having our new cooking appliances now we are still in love with it, I don't think it will prove to be a one hit wonder in our house, I intend to use it a couple of times a week, it's quick and easy. The slow cooker is another thing I use quite a lot particularly in the winter.
Although I have to say that I have bought things in the past such as the yoghurt maker mentioned by previous poster Tegan which hardly ever saw the light of day. The smaller two person GF grill looks quite small and compact, my husband's eldest granddaughter bought this type to take away to university with her and swears by it she does everything on it including sandwiches. I gather George Foreman has made far more money from this than he ever did from boxing. Good luck to him anyone who can get the Americans eating less fat deserves a medal!