Lentils are so great because they cook up so quickly if you get dried ones. No overnight soaking and all that jazz. I haven't seen canned ones before, though. There's a soup I make with lentils that has mostly spinach, onions, salsa, and chicken broth. Roasted chickpeas are great too because you can snack on them through the day - but they take so long to cook, I get impatient.
I like chickpeas on my salads, with ham and pineapple.