The annual QHLAN is currently underway and the 1on1 and 4on4 QuakeWorld tournaments are live. At the time of writing the duel competition is in playoffs stage (with gold/silver/bronze dividing the 40+ players into separate divisions) and the 4on4 competition is beginning soon.

According to sassa, the 4on4 games will start tonight (Saturday) and the finals for both 1on1 and 4on4 will be played on Sunday night. LocKtar, reppie, ParadokS and the winner of blsp / mutilator currently remain in the gold duel tournament.

QTV: here
Coverage: sassa's blog, phil's blog & #qhlan on QuakeNet.
Tournament info & brackets: here

If you don't have QW and would like to spec, grab nQuake (note: you will need pak1.pak to spec non-custom maps).

QHLAN Site
Quakeworld.nu