what they are probably talking about is all the streaming stuff, there is loads of content on there which you can stream, so no need to wait for it to download. (and there are no adverts)
Loads of movies, up-to-date ones too, and you get all the replay tv channels like 4od, fivereplay, itv and bbc iplayer.
Plus loads of other tv stuff and hd movies which do require a download.
I just pay for all the downloadable tv and replay stuff, soooooo much cheaper than sky but theres obviously less normal channels like no sky one etc but you do get setanta.
Anything thats us tv i get hold of anyway before its broadcast here so doesn't bother me.
The box itself is quite good, does series link and everything like that.
Sky is a ripoff imo, btvision + internet does me fine.