Another great addition to the Hitman series. The best one yet in my opinion.
The music by Jesper Kyd during the tense times of the game really makes you feel like you're in deep. All of the levels have very different looks and feels to them. As well as having many different ways to finish the mission, leaving very good replay value. From poisoning to "accidents" to sniping or just point blank silenced baller to the back of the head, there is many different ways you can take your targets out, which also affects your score at the end.
The newspaper real is a neat little extra thing too. It shows you your rating, what people saw or didn't see, and if your notoriety is high enough they will try to produce a drawing of you. It's kind of funny sometimes if you cover your tracks well and they still try to produce a picture it ends up looking nothing like you. (It's not a software bug, the picture isn't supposed to so it gives you a more "they are way off" feel.)
The "Theme" song I guess you would call it (Ave Maria) during the Menu and Easter eggish ending was so awesome. Other then psychic A.I sometimes, this game is definitely a must BUY. Love the REAL ending. Probably the best ending in a video game I have ever seen.