Bought a new Intellimouse Explorer
In the past few months, it started cutting in and out on me, and it wasn't a short in the cable. If I'd cross from the far end of one screen to the opposite end of the other (I use a pair of LCD's), Windows would make the disconnect then connect noise and I'd lose the cursor somewhere. I could almost deal with that if it wasn't for the noises! :) Alas, I decided it was finally time to retire it. It had been good to me. The Microsoft logo had long since been worn off and there are actual grooves in the plastic from my fingers.
I replaced it with the new v4.0. Why not? The last one lasted so long. I got the wired version since I hate changing batteries (as my wife does this regularly on hers). The new version is roughly the same shape, but lighter. The only thing I don't get is why they made the forward and back buttons smaller. Then again, I don't know how many times I've accidentally hit them when grabbing the mouse on the old one.
My Natural Keyboard Pro is still working. It looks disgusting, but it works. I hope it continues to hold on, because I haven't found any other keyboards that have the same tactile feedback I like.