My favorites are Pulled Pork (see what's for dinner discussion), lasagna and Catalina chicken from flylady.org (I don't know if I can post those, but go on over and look in recipes)

I like to cook a beef roast with potatoes, carrots, onions, garlic....... to eat one night, and the next night, shred the beef, add a little taco seasoning and you have tacos. OR layer tortillas in a casserole dish with enchilada sauce, cheese and shredded beef and heat in the oven until warmed through. I don't roll enchiladas because it takes too much time, a casserole dish does well, and when you cut into it who can really tell if it's rolled or layered?  I haven't tried that in my crock pot yet......

I make soups (chicken noodle and minestrone are our favorites), chilli, beef burgundy.........

I like to cook a roast a couple different ways. 1. I pour a bottle of bbq sauce over it and when it's done slice or shred it. 2. Cover it with a packet of Onion Soup Mix.

Oooh, these look great! I have ummm, multiple, slow cookers, but I have never had a lesson on using one... I might have to give that pulled pork a try...

My new favorite slow cooker recipe is from Food Network's Quick Fix Meals with Robin Miller.  http://www.foodnetwork.com/quick-fix-meals-with-robin-miller/beef-it-up/index.html

This recipe provides 3 days of meals for a family of 4.   The sauce with the roast is amazing!  I loved all the recipes shown except the Chai Tea Smoothie which I didn't like at all (and I love chai tea).  I've made these recipes many times.  My 7-yr old daughter is always asking for me to make these dishes again--especially the empanadas.

Chicken and Stuffing

Spray the crock pot with Pam.  Layer uncooked chicken breasts, swiss cheese, one can of cream of mushroom soup mixed with 1/2 can of milk, one box of Stove Top Stuffing, then 1/2 stick melted butter.  Cook on low for 4-5 hours or on high for 2 1/2 hours.

I have a small, oblong crockpot, perfect for the two of us.  It's just the right size for a whole chicken.  I rub in and sprinkle on seasoning inside the chicken and out (lemon pepper, herb and garlic, or cajun) then "roast" it for three or four hours, which is all it takes in the small cooker.  Delicious!

We have a favorite chicken recipe at our house.  It is so easy and so good.  

Kelsey,
look for the book "Not your mother's slow cooker recipes" at your library. Many of my favorite recipes, and a LOT of great tips are in there!
Some need to know things for crock pot "Newbies":
1.Always leave at least 1 inch of space between the food and the top edge of your cooker.
2. Always fill your cooker at least 1/2 full.
3. If your pre-load your cooker the night before, and stash it in the fridge (BTW do not do this with pasta or rice-EWW, you'll get goo- trust me on this), remember to add some time because it will need to come up to temperature from cold.
4.Do not add water unless the recipe calls for it. Trust me on this one, too.
5. If you forget to spray the crock with Pam or use a liner (not eco-friendly but I use them on gooey dishes), don't worry! Fill the crock with warm water and toss in a dryer sheet (unused) or a capful of fabric softener. Weird, but it works.
6. Don't lift the lid or stir unless the recipe calls for it. You'll seriously alter the cook time, and the dish may cook differently due to steam/condensation loss.
7.Lipton Onion Soup Mix and Cream of Mushroom (or celery or chicken or...?) soup are great add-ins if you just can't think of what to do with that chicken or roast or chop.
8. Veggies can overcook quickly in the crock pot. Faster cooking veggies (tomatoes, zuccini, asparagus....) should be on top. Root veggies on the bottom. (potatoes, onions, parsnips, etc...)
9. When in doubt, use 1/2 the seasoning during cooking, and the rest-or to taste- after cooking, before serving. Especially important when using curry, cayanne, chillie powder, pepper, etc... Also, if you aren't sure of how it will taste in the dish, use a small amount to begin with. You can always "cover" the taste with stronger seasonings if necessary.

That's all I can think of for now. Hope it helps! Some of this is from my mom, the crock-pot Diva :-), some from books, and some from trial and error....

Oh my goodness! You might have just saved my finals week!! Thank you so much for the tips, they will go to much good use.

Those are GREAT tips Monica!  Thanks!