Torchwood on BBCAmerica OnDemand....
on BBC America OnDemand - the Torchwood stuff is now up
'Who is Captain Jack?' runs 14 min and is a compilation of clips from DW series one featuring Jack and tidbit or two from the premiere ep of TW - kind of explaining who he is and how he got to Torchwood
'Welcome to Torchwood' runs 12 min and is Declassified 00
'Torchwood preview' runs 35 min and is the first 35 min of 1.01 Everything Changes - it ends when Gwen is running home after Jack has slipped retcon in her drink and then says to tune in to the premiere Sat Sept 8
there is also a Torchwood snippet/advert on the BBCAmerica site http://bbcamerica.com/