Nothing when in the pot, but often I will do minor seasoning while I'm browning them in the skillet first. I should try marinating first to really infuse some flavor, but I never think of it early enough and so far I have not complained.

If you're cooking them in a slow cooker I see no need to marinate them, as the slow cooking time surley gives them plenty of time to really absorb and take on the flavor of your seasoning! I love cooking in the crock-pot it seems to me all the meats I cook in the crock-pot never let me down flavor wise! I even do Buffalo Wings in the crock-pot that are simply wonderful! I am not so much into them being crisp as I am into them being tasty! If you needed to crisp the skin pop them (BBQ Ribs or Hot Wings) under the broiler in order to brown & crisp the outer skin.