I used to do more of that, but I've drifted out of it because
really I prefer to pick things to watch on TV that I feel like that
evening. I do usually record movies that SBS shows, and sometimes
use my second set-top-box to watch something else live at the same
time. Commercial TV has too many ads even for me to want to bother
with fast-forwarding, so I usually stick to ABC and SBS.
Unfortunately there's often nothing on so I watch more stuff on DVD
and from the internet (the latter are often the sorts of history
documentaries that ABC and SBS seem to have both lost interest in
these days).