Recommend me some games

Hey everyone, well I have had my 360 for a little over 3 weeks now. And I unfortunatly dont have a clue on what games are good for it. I played a demo of Dead Rising, and absolutly loved it so, I went out and bought it for 29 brand new. But I want to know if there are any other good exclusive Xbox 360 games. Because if games are on both the 360 and PS3, I buy the ps3 one because I dont have xbox live. So anyways please help me out on what I should get. I like RPG and action games the most. Also I value a good story over everything else. Thanks everyone, also if you can look at my game collection on here and recommend me stuff off of what you think I'd like. Well thanks again

Jen