I liked it, although not quite as much as the other people whose reactions I've read. The Joker was well written and genuinely menacing, but about the third time he pulls off something clever, somebody should be asking "but wait--- what if he's anticipated our response?" Also I got annoyed by Christian Bale's gravelly and forced Batman voice before the movie ended.
I may try to see another movie or two this week. I haven't seen "Wall-E" yet. (Nor "Kung Fu Panda" or Indiana Jones, for that matter.) Also the local indie theater is showing "Mongol."