Calling all gamers!!

Okay heres the situation...me and my friend are tired of the continous games which in single player are tiresome and repetative SO...

 Can any of the vast gamespot community recommend a multiplayer game which can be played on LAN so me and my friend can play on in our some time etc.

Thanks!

So from the messages so far ive summed it to these games:-

 Company of Heroes

Quake series

Unreal...

is there any other lan games which are orientated around melee combat and team combat

Thanks!