By archer I meant Ranger of course (which is supposedly the "archer" class), but there are even some close range archer builds with certain skills that make you deal alot more damage close up.
The skill and gem system allows for some really fun combinations (which is what makes it better than D3 for me).
For example a common Ranger build is to use Lightning Arrow (which hits 1 target and spreads to 3 extra mobs) linked to Lesser Multiple Projectiles (shoot 3 arrows instead of 1) linked to Chain (each projectile passes over to another target) linked to Life Gain on Hit (each time you hit an enemy you gain a fixed ammount of health, 20hp for example) linked to Blood Magic (spells use health instead of mana). This means that each time you shoot you lose quite a bit of life to cast your spell, but it fires 3 arrows that potentially stack up on 24 mobs and make you gain 24 x 20hp (which means you can cast your Lightning Arrow continuously, as you'll be making more health than it costs you to cast it).
That's just an example, here are some other weird builds :
http://www.youtube.com/watch?v=D9WiIxJqpLM
http://www.youtube.com/watch?v=eHO-Gmi83BE (this last one is pretty funny, but gives you a headache quite fast).