A nice one I had from a recipe book is very simple:
chicken breasts
1tbsp hoisin sauce
1tbsp soy sauce
1tbsp sweet chilli sauce
1tbsp ketchup
1tbsp apricot jam
Trust me it's yummy. Quite dry, not the usual stew type things.
I've done some lovely soups in the slow cooker. The latest was a kind of broccoli & bacon soup.
There's soooo much stuff though, I'd advise getting a good recipe book.