Action films either appeal to me, or they don't. I liked this one. I like fighting in films, and it was nice to see Jolie beating up five guys at once, and disabling security systems with her pants and so on.
I also thought Liev Shreiber was pretty hot, specially when he starts fighting too.
ETA and Chiwetel Ejiofor is the third character in it - he was The Operative right? He's good in this too.