Do a 'star free' episode...
I would love to see a show done one week without the celebrity stars and have the usual ensemble cast as the 'stars'.
The main cast members I would choose would be Ed Kavalee (tall younger male), Daniel C (beard) and Nicola (skinny female with pointy nose).
It would be a great way of recognizing the regular cast members (which seems to be a sore point with other posters as well) as well as seeing how well the ensemble cast can drive the scene.