Arch Linux User Group
Arch Linux User Groups (ALUG) are local meet-ups of people using Arch Linux. They are similar to generic Linux User Groups, but specialize on Arch Linux.
The (probably) first ALUG is located in Düsseldorf.
There is a ALUG in Berlin It's in a process of creation and will take place each first Wednesday of a Month. Join the IRC at #archlinux-berlin
The Arch Linux User Group Luxembourg (ALUGL) can officially be found at ALUGL.