I like mixing some quinoa into tabbouleh (it goes nicely with the bulgur). I also like including it when I make stuffed peppers, tomatos, and courgette (just add cooked quinoa into the mix with the onion, pepper, spices and meat).
My old roommate even used quinoa in her meatballs (instead of rice).
I haven't served it to my husband yet. I am still trying to get him to accept brown rice or wild rice on occasion.