Epic is just too little to describe this game.
Innovative combat, and engaging leveling experience, the game is a very promising candidate for The game of the year, I played beta for over 40 hours and can say confidently that Anet had been true to it's mission and it's original vision of the game.
This game takes everything you know about MMO's and puts into this awesome scenario with such epic and amazing quests and pvp that you don't wanna leave, ever... Furthermore the downed mechanic and traits systems are well implemented and give a very solid control over character customization which in turn allows you to give a personal touch suited to your style of play. finally excellent graphics and sound give an immersive experience one that will cause you to want to explore and see more.
You love MMO's? You should try Guild Wars 2.
You hate MMO's? You should definitely try Guild Wars 2.
To both questions, you gonna love Guild Wars 2!!