Most members of my family like to spruce up the mashed potatoes w/ sour cream, cream cheese, garlic, etc., but I just like them completely plain w/ a little bit of milk and butter, salt and pepper - not too much. So they always do a separate dish for me.
Also I don't like stuffing inside the turkey because it's too mushy, so they also to do a separate dish of stuffing that was done on the stove top and then baked (so fluffy and dry, and crispy on top). Ok, I guess I am a little high maintenance when it comes to TG food. I am kind of a purist in that I like the traditional basics, but i am ok w/ getting a little creative with the side dishes.
I do like gourmet veggie dishes, as long as they are not too heavy and I am especially a big fan of green vegetables. However this year, because I was asked to make a carrot dish, I am making Za'atar roasted rainbow carrots (w/ olive oil) and served w / Sumac/Pistachio yogurt sauce. Something a little different, light and healthy. If people like it, maybe it will become a standard. 
We aren't a huge dessert family, so whatever shows up, shows up. My ideal is a cranberry or pumpkin mousse - something very light and fresh, otherwise I usually take about two bites and that's it. I also prefer a pumpkin or cranberry cheesecake to a pie.
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