Since no one has brought it up yet and quite a few people seem to think what Molly does is unrealistic:
Parkour and freerunning in general:
http://www.youtube.com/watch?v=NX7QNWEGcNI
Mostly simple moves in this one but it has it's moments.
John Morrison (former WWE star):
http://www.youtube.com/watch?v=NR4iiunIZGs
http://www.youtube.com/watch?v=P1-JaBBI2vc
http://www.youtube.com/watch?v=7x3K9NkUlEs
First two vids are Morrison training/practicing. Third video is him actually using basic parkour as well as capoeira in his matches.
Casino Royale parkour chase:
http://www.youtube.com/watch?v=jJubOZLpp4A
Here's the opening chase scene from Casino Royale. The stuntman/actor that Bond is chasing is one of the actual creators of the sport and does a good job at showing off a few pretty risky moves during this chase.
Honestly if anything I'd say Molly was LESS over the top compared to typical parkour stunts. Granted I'll give you guys the scene when we first meet her where she seemingly disappears and gets the drop on Lee. Everything else however that involved parkour and her climbing axe could be done if you had the training, strength and reflexes for it.