Normally I only really get hit with one really good games a year. Right now I am in need of about a 36hour day to finish my review of Borderlands prior to playing Dragon Age Origins. Then it's Modern Warfare 2, Assassins Creed 2, and Mass Effect 2. Hell, I even think I am leaving one out.
Borderlands is really high on my list, DAO looks great so far and the other three titles were all very good in their first incarnation. This is the very thing I and many other gamers have been looking forward too for years. A day when games coming out are new and exciting IP's(or at least very very good ones) that include tons of gameplay instead of the 6 hour model so many others have addopted. Granted some of this is due to changes in the industry and in technology but for the most part the developer has to want to give players more for their money.
If your looking for my initial opinion on Borderlands I can tell you this much, it's by far the best game released so far this year. It looks like it's going to have a lot of competition though. The gameplay makes up for the fact that the story and the overall polish of the game drop off once you leave the initial area. It is worth every bit of the money though and works for every type of player except the RTS/TBS crowd.