I don't repeat things very often but there are somethings that might come out on a fortnightly basis, like spag bog, or hot chicken from the shop down the road LOL! I do however have a lot of leftovers when DH is away (ie all the time right now) so I either freeze some and bring it out in a few weeks time, or vary it so it's a bit different on the second night.

I have a good friend who makes spag bog every Sunday night like a religion, it's because it's quick and doesn't require any thought at the end of the weekend.