Outstanding, and 100% entertaining suspense packed thriller. It is a masterpiece of direction with the unmatchable acting skills of DiCaprio and Tom Hanks. I've watched this movie a couple of times and never does it fail to entertain me.
If you are looking at the reviews first to make sure its worth a watch, I say you go right ahead and you will not be disappointed in any means. I literally cried after watching the film (at how awesome it was. I never generally cry even when its a sad movie)
But, I will recommend that you watch it in one sitting, not give any breaks, with full concentration. Because it is the buildup you make, the emotional connectivity, that makes you have the full effect of the film. I had to break the flow in the middle, but the next time I started watching, I played it from the start again. Because once you see it, you can't unsee it. So just drown yourself in the movie, and it'll be an outstanding experience for you.