DirecTV just added BravoHD, and they also sometimes show special programming (TNT has been on, and the NBCHD Olympic feed was just shown).
From their website:
http://www.directv.com/DTVAPP/imagine/HDTV.dsp
The DIRECTV HD Package includes ESPN HD, Discovery HD Theater™, HDNet, HDNet Movies and Bravo HD+ — all for $10.99 monthly.
HBO® HDTV or SHOWTIME® HD are included with a subscription to either regular service.
NFL SUNDAY TICKET in HD offers over 100 games, subscription required.
DIRECTV HD CHANNEL LINE-UP:
70 HBO
71 SHOWTIME
73 ESPN
74 BRAVO
76 DISCOVERY
78 HDNET MOVIES
79 HDNET
80 CBS EAST COAST FEED*
81 CBS WEST COAST FEED*
99 PPV MOVIES / ADULT
702-719 NFL SUNDAY TICKET
*available in selected markets