Dragon Age II has only just been released but a glitch for infinite EXP and Money has already been found.
Originally found and uploaded by Youtube user changsupra88 the glitch is currently still working although it is expected that BioWare will soon patch the glitch. The video below is a better quality video of the glitch by XCVii007r1.
So enjoy it while it lasts and here are the steps courtesy of YT:
1) To do this, you need to complete any sidequest that does not activate a cut scene upon receiving your reward. It will work for any of them – it does not matter if you do the one I showed in the video or not.
2) Draw your weapon, and approach the NPC. When you are in the middle of the animation to put your weapon away, talk to the NPC and keep pressing ‘A’ (xbox 360).