Well, I didn't like it. Maybe it's because I've always had Tim Buryon's Gothan city in my mind, with it's bleak, gothic visual and it's Prince-related soundtrack. The 1989 Batman IS the best Batman film, and "Begins" dosen't get any close to that.
Batman is onscreen for what, 10 to 15 minutes?
The only interesting character, the scarecrow, which looked like the best and most well-constructed Batman villain since Jack Nicholson's Joker simply vanishes without making an impact. And his "death" (he didn't die, did he) was absolutely ridiculous, a shock gun? What was that all about?
Michael Cane, Morgan Freeman and Liam Neeson are on "Automatic Pilot I Need the Money" acting style, so...
Too much time is spent on Bruce Wayne's conflictive character (is he an asshole or a good guy? can't tell...), showing him buying hotels with personal checks and ridiculously fearing bats, and the whole villanously plot is shown in a fast, confusing way.
The whole plot twist about Liam being Ra's al whatever is predictable and not enough to give the character any depth. It's basically Liam Neeson character from "Kingdom of Heavan" with a Flash Gordon villain mentality.
I know this movie is not related to Burton's or Schumacker's movies, but here's how I would rank them (1 is better)
1- Batman (1989)
2- Batman Returns
3- Batman Begins
50- Batman Forever
99999- Batman & Robin