We've gotten in the habit of roasting a whole chicken every couple weeks* so usually end up with leftover chicken for two to three nights. Figuring out what to do with it has become fun. A few dishes have served us well.
1) Curries. Just buy some red/yellow/green paste, add some coconut milk, and a few different veggies and you're good to go. Bonus points for adding some chicken broth/bouillon. For veggies we've tended to go with garbanzo beans, zucchini/other squashes, broccoli, green beans, or potatoes depending on the curry.
2) Pot pies. The dough might be a bit rough, but everything else is easy. Just cut up the chicken, gets some cream of chicken soup and add a frozen corn, green bean, carrot mix. Bonus points for celery if you want.
3) Tacos. Just throw it in a pan with some seasoning (you can get premade or figure out your own) and then throw it in corn tortillas with lettuce, cheese, and whatever else you want. If you want to make somewhat crispy tacos throw a little oil into a pan, heat, and then put the tortilla into there. With tongs you can form a shell shape pretty easily.
4) Chicken soup. Lightly saute some onions and garlic, add chicken broth, the chicken, celery and carrots (we tend to just use baby carrots). Get the veggies near cooked then add some egg noodles.
Then there's always the stir fries and such.
*By we, I mean Aimee. She's gotten pretty good at making good roast chicken.