That's one reason I seldom ever used my Foreman grill, I hated putting the whole unit into the sink to scrub it off, and I could never get it 100% "clean" since the oily dish water would seep down into the device, then leak back out on to the counter when I put it away. Also, as far as cooking was concerned, it would squash everything on one side, closest to the hinges, and push everything out the other end. Every time I tried to make a grilled sandwich in this, the fillings would get pushed out of one side of the sandwich. You couldn't cook delicate items like fish in it either because it would flatten them and break the fillets apart. Items like burgers or chicken would come out dry because the weight of the top part would squeeze out all the juices in the meat, not just fat.
For what it's worth, if you are looking into the Cuisinart models (there are two of them, a small and a large) I would suggest checking the reviews first. There are some things they solve, but they have problems of their own, one of them being the grease drainer in them. Also, check out your local Big Lots, especially around the holidays, because I've seen refurbished models in there for only $30 or so from time to time.
The other appliance I really hated was the Jack LaLane juicer. It was a sturdy device, but beyond that, it was very poorly designed in nearly every regard. It was way too huge and heavy for what it did. The plastic on the device stained easily and permanently from stuff such as carrots or beets. The spout was placed too low for you to fit a typical tall drinking glass under, so you either had to juice into a bowl then pour that into a glass or juice into a short glass and have it overflow all over the counter. The metal blade, while very sharp, was also dangerous to remove from the machine without cutting your hands up. They provided a handle attachment to do this, but then you have to deal with losing or misplacing that attachment. The parts of the device would practically fill up your whole dishwasher, so you would have to run a whole cycle just to clean this one thing, all for a stupid glass of juice. And finally, the cost of the juice itself. You needed a lot of fresh fruit and veggies to make just one glass of juice. Considering a little pint of blueberries will cost you around $4-$5 at the store, then a pint of strawberries, some cantaloupe, Kale, etc... by the time you make one drink it could have cost you over $20 worth of ingredients.