Borderlands review.
Borderlands is super addicting for the same reasons Diablo II was all those years ago. You play with your friends and shoot waves of enemies for no reason other than to get loot from them. Money, guns, money.... more guns. Borderlands fancies itself as a RPS, or a Role Playing Shooter. And yes, you will be leveling up a character, finding different weapons with different effects, putting points in a skill tree, but overall the game is a shooter first. The combat is very good and all of the different weapons give you variety on how to slay your opponents.
The decision to cel-shade Borderlands might have been Gearbox's best decision in this game's development. Without this style, the game would just look like a Fallout 3 clone. The cel-shading gives this game personality.
So, it sounds pretty good. Why is it not a five star game? Borderlands is very fun playing co-op. A lot of the fun is leveling with your friends, sharing and hunting down loot, etc. By yourself, Borderlands is... boring. It is fun in spurts by yourself. With other people the game becomes awesome. Also, playing with people means harder enemies and better loot. My other major criticism is the plot, or lack their of. Their is one but it is pretty throwaway and you often forget about the plot until reminded by NPC's.
Do yourself a favor and pick up Borderlands. Just make sure you have friends to get the most out of this game.