Wow, if I were you'd I'd be a lot more worried about my dad's health.
The fact that he is doing nothing but watching TV and being grouchy sounds like he might be taking his job loss relly hard, or at the very least responding to it very poorly. It can be pretty jarring to be torn out of a situation you have become comfortable with (i.e. getting up every morning, going to work, and recieveing a paycheck every payday) and we don't always adapt as we should.
Your dad sounds like he might be kind of depressed (everybody expresses this a little differently), and sitting around starring at a glowing box day in and day out is a sure fire way to find yourself even deeper in depression. You didn't mention having a mom or any siblings around, and you mentioned that you do the cleaning, so I will assume it is just you and you dad. Does he have any close friends around? People that he has known and respected for many years? Your grandparents, uncles, aunts, long time family friends?
If things are really as bad as you say, and he really never even leaves the couch, then you might need to seek the help of some of these other people in his life to get him moving again. Does he leave the house at all? Or is the bathroom, kitchen, and couch literally the only places he sees for certain stretches of time?
On to Bingo's suggestion, he has a very good idea. Just keep filling out applications. Sure things are tight right now, and hiring is slow, but don't let that be an excuse. Things come up, employees quit or get fired and new ones have to be hired. Fill them out for everyplace you can think of, and then a few more, and with a little luck, sooner or later you'll get a call from one of them. Also keep in mind that they only keep your application on hand for about three months, and sometimes less. Most applications will have this written on them. So be sure to reapply as soon as possible. I assume you are in high school, but if not, keep in mind that once school starts and high school students quit their summer jobs, this will open up a lot of positions. If you are in college, many stores have policies of working around your school schedule and will gladly do so.
Hope your situation takes a turn for the better, and I hope your dad's situation isn't quite as severe as I picked up on from your post.