Most of mine has been through warranty, but hey support the companies that support you so I am gonna shout out to the following...
-Volkl- Warrantied 3 pairs of 1st gen. Walls for me. I called it quits finally and gave the last new skis to my Dad. He loves them. Still rockin solid
-Smith- Has never denied a single warranty for me. Several goggles, sunglasses and helmets have been renewed. I find that Smith has the absolute best warranty program in the business. They Rule!!!
-K2- Warrantied an older pair of skis that were past their warranty. Sent me the next years model that was not even out yet.
-Salomon- Had a pair of liners fail on the old 1080 Foil boot (white/blue). They sent me brand new boots. Two years later model and not just the liners.
Working at a ski shop helps, but through all of the warranties I have done, these are some of the best companies to deal with.