You could always buy it on DVD http://www.ebay.co.uk/itm/Hill-Street-Blues-Season-1-and-2-DVD-R2-/181705041434?pt=LH_DefaultDomain_3&hash=item2a4e76e61a It might seem expensive, but it is nearly 14 hours of programme material.
The only trouble with the YouTube episodes is that there are only a couple of the @old' episodes featuring Sgt Phil ('let's be careful out there') Esterhouse.
I do wish they would show it on tv
Thanks everyone. I have sky but on a different floor to my MAC. I have TVs with free digital programmes but no box. I think I'm stuffed until we move house :-(