Are you watching on digital or analogue (ie, normal aerial or thru a set top box) ?

Actually, with Ch4, they present the majority of their films, even in analogue transmission, in 16:9, so on digital aswell as analogue, you still get black lines on a 4:3 TV... If it was ch5 tho, viewing on analogue signal, you'd lose the sides of the picture and only have thin blak lines top and bottom....

I don't like the idea of loosing the sides of the picture tho, nor having a reduced sized picture when watching DVD's or digital TV, which is hy I think 16:9 widescreen TV's are much better...