If you'd like to "nominate" a thread to be added, just reply with a link to the thread!
Important Build Help Threads: If you're looking for help with what computer you get, how it should be specced out, how to assemble it, or just want feedback on what you're considering purchasing, check out this thread.
Where to buy components / PC's / Laptops: A list of websites that can come in handy when searching for the right store to deliver your goods.
World of Warcraft Guides/Articles
Complete WoW-on-Linux Guide (with screenshots) (OLD, 2010): This is Erik765's guide on how to set up WoW under linux.
WoW can use more than two cores (OLD, 2010): Just for anyone who wants to argue that it can't. Also, note that the engine has been optimized further than this post states (it was from Feb 2010). WoW is now further optimized for multi-core systems (three large threads and many little threads).
processAffinityMask Testing (OLD, 2011): Testing whether or not locking WoW out of core 1 gives any real benefits.
Maximum Graphics Settings in WoW (OLD, 2012): A thread on how to tweak WoW to be as visually detailed as possible
[How To] Cut Your WoW SSD Installation Down (OLD, Pre-CASC): Free up space on your SSD by moving resource files that don't need SSD performance to your regular old mechanical HDD.
Low FPS? Check Here! (OLD, 2010, but fairly relevant): This is our thread containing suggestions on how to fix low framerate. It contains a few suggestions on things to try, instructions on how to troubleshoot some basic problems, and what to do if none of these help.
Reduce Your Latency (maybe) (OLD, possibly useful for Win7, unknown if useful for Win8+): This is our thread containing information regarding modifying the way your computer handles TCP requests. In the vast majority of cases, it decreases your in-game latency with no negative side effects.
If You Have Problems With Wireless (OLD, but still useful): This is our thread regarding problems with Windows Wireless Zero Config (aka WLAN AutoConfig), which can cause lag spikes every minute.
On Mechanical Keyboards (OLD, but still useful): Interested in buying a mechanical keyboard, or just finding out what it is and its advantages? Check here!
Guide: How to Create a High-Quality Recording of Your Game With a Small File Size (OLD, but still useful): Pretty much what it says.
Keyboard NKRO List (2014, may not include some newer keyboards): Thinking about buying a new keyboard? Check this thread to get some ideas on high quality keyboards with plenty of rollover.
Aspect Ratio, Resolution and Frames per Second - A Small Guide (OLD, but good info): A small guide on frames per second displayed (update frequency), resolution and aspect ratio.
Benchmarks and "Leaderboards"
Post Your Framerate Benchmark Here (OLD and useless): A place to post and discuss WoW benchmarks and benchmarking.
MMO-Champion CPU Overclocking Leaderboards: Have you overclocked your CPU? Post your achievement here (be sure to follow the directions in the first post)!
MMO-Champion GPU (video card) Overclocking Leaderboards: Have you overclocked your GPU? Post your achievement(s) here (be sure to follow the directions in the first post)!
Post Your Desktop!: Since it's such a popular topic and keeps recurring, here's the "official" post your desktop thread. This one includes images of your desktop (wallpaper, icons, etc). Warning: Image intensive.
Post Your Gaming Setup!: Another popular topic that keeps recurring. Here is the place to post your gaming computer's specs, and a picture or three if you want. Warning: Image intensive.
Free Software Megathread (OLD, but useful): A repository of useful, free applications.
MMO-C Folding Team (OLD, but team is still active): A thread to discuss Folding@Home, as well as the unofficial MMO-C Folding Team.
Daily Deals Megathread: See a deal that is almost too good to be true? Post it in this thread to let the other Computer Forum users know!
Programming, Coding and Design Megathread: Need help or have questions regarding programming? Ask here!
Computer Surface Megathread (OLD, appears to have died out): Anything and everything related to desks, tables and other computer surfaces!