I was watching The Royle Family the other day which as you know was made by Granada/ITV Studios, yet shown on the BBC.
As much as I love the programme, I think it would have been better tightened up a little and shown on ITV where everything is slightly shorter due to the adverts. There were times when scenes did appear to be a bit dragged out - especially when they were showing clips from the TV programmes they were watching.
Are there any other sitcoms that you feel the same way about?