I got a pair of Blichmann Brewing Gloves, http://blichmannengineering.com/Brewing_Gloves/Brewing_Gloves.html, last year for Christmas. They're nice. I use them mostly when I'm cleaning, since I usually have 150+F water to mix the cleaning chemicals in. Are they necessary? No, I went years without them, but they're nice to have around now.
what JKL said... those are AWESOME!