Just got SkyHD and it's cool!

120GB of HDD space.
Dual incoming signals so I can record two channels, or watch one and record another.
Pausing of Live TV, or rewinding live TV to watch your own replays
AnytimeTV which has a selection of 8 programmes and two movies I can watch anytime I want!
I can set my HDD recorder using both the Sky website, or text my box to record the programme

and of course the HD channels!