LemonPunch is a leading Garry's Mod community I created for about a year ago. Aside from being a gaming community we develop quite a bit of things such as an administrative software, an advanced donation systems, and tons of artwork. Our forums have a friendly environment and all sorts of interesting and amusing discussions often appear. People tend to show off their creativity and there's a somewhat cool youthful atmosphere. At least I'm trying to keep it cool and friendly rather than messy and negative.
You can check out my forums here: www.LemonPunch.net
Pretty satisfied of the forum theme and the structure of the forums. At the moment, we've tweaked it a bit to create somewhat of a christmas mood.
Please let me know if you have any feedback or questions. Always up for listening and answering.