We don't really do "Sunday dinner" unless we're having company. We tend to do leftovers or eat out, or sometimes I do the same kind of meal I do on weekdays. I like to keep weekends really flexible.
My Dad used to get irritated at my mom insisting on a big Sunday dinner in the middle of the day because we couldn't go anywhere. So, as a result, I always come home from church with absolutely no plan whatsoever. The funny thing is - dh would love a big Sunday dinner!
We ate out this noon - so I think we're having Top Ramen for dinner!