Some day those figures are going to decide they need to fly off the shelf, and you're gonna have to glue the pieces back together. Here are some common problems you may encounter and how to fix them.

Bent Limb Fix	How to straighten bent parts on your figures.  (by Henchmen4Hire)
Broken Shoulders and Hips Fix	Did Spiderman slip-off a roof and break something? Here's how to fix your figures' hips and shoulders.  (by Jin Saotome)
Fixing Waist Joints	How to use spare screws and other misc parts to repair broken waist joints.  (by TheLastSuperman)
Joint Peg Repair	Did your figure arrive in the mail with a broken leg? This tutorial can help!  (by Kyle Robinson)
Juggernaut Customs - Replacing Broken Pegs	How to replace broken pegs on action figures!  (by Juggernaut Customs)
Neck Peg Fix	How to repair a broken neck peg  (by Gee_jays_Customs)
Peg Fix	How to replace broken pegs with screws  (by Henchmen4Hire)
Repairing Broken Pegs with Screws	When your figure gets injured in battle, instead of amputating, just replace his peg with a screw! This tutorial shows you how to do it.  (by Mint Condition Customs)
Stuck Waist Joints	If you've ever had a figure with a stuck waist joint, this tutorial shows you how to get him turning again!  (by Mint Condition Customs)
Tightening Joints	How to use super glue to tighten joints.  (by Henchmen4Hire)