Gosh, I can't wait to watch this!
I ended up watching the first two in the wrong order. I was initially not interested in Batman Begins, and then a friend forced me to go and watch TDK, which I quite liked. I bought Batman Begins on DVD a month or two ago and was pleasantly surprised, it's my favourite of the two.
Because of all the hype surrounding TDKR, I feel like I have to hide from half of the internet until I've watched it myself, so I don't spoil it! I read that Hathaway does a surprisingly good Catwoman, which I am looking forward to seeing.