Everyone like to spend time with friends. For some people that's another couple, for others it means 10 or more guests. In less economically-strapped times that might have meant going to a restaurant as a group. However, most people are probably trying to trim their budgets and spending $20 or more for a two person dinner isn't quite as easy as it used to be. Instead, try revisiting the long-lost art of hospitality. Yes, that means inviting people over to your house (or apartment). If its a large group of people then have everyone bring something to share. If its just another couple then prepare a main dish and ask them to bring something dessert or a side dish. If our recent lives are any indication, the potluck tradition might be making a comeback. Chris and I have participated in at least four potlucks since New Year's (several of them for work) with at least one more coming up soon. If you're having trouble coming up with potluck ideas here are a few ideas for potluck dishes or meals that can feed a crowd inexpensively.
Soup- This is one of my favorites, mostly because it is inexpensive and endlessly versatile. If you're hosting soup is a great dish because it can be made ahead of time and left to simmer. This allows you to spend time with your guests instead of in the kitchen. A large pot of soup can easily feed 6-10 people and if you ask someone to bring a loaf of bread it really doesn't get any better than that.
Chili- This one has most of the advantages of soup. You can make huge quantities for a relatively low cost, especially if you use dry beans instead of canned. If it isn't hearty enough for your taste then bake some russet potatoes and serve the chili over that or even in bread bowls.
Spaghetti- or really any pasta. We've done pasta salad, alfredo, ratatouille, and lasagna. These all have varying degrees of cost but overall any pasta dish is easy and reasonably inexpensive. Of course almost everyone loves spaghetti. Come up with a veggie side dish and have someone bring a loaf of garlic bread and you've got it made.
Roast or roasted chicken- this one is a bit more complex but you can definitely pull it off. Season it up and throw it in the oven. Then ask your friends to bring the side dishes. This is probably better suited to groups of 4-6 though since it can be a bit difficult to manage.
If you're into fancier meals most of these can be dressed up a bit. Truth is, though, if you're having people over everyone is probably more interested in the company than in the food. Some basic fare prepared well will make it easy for everyone to have a good time without stressing over the cost of eating out or keeping you in the kitchen all night.