Just read on Engadget that US Wii owners are being offered a free rubber cover for their Wii Remotes. These are sticky to stop sweaty palm sliders and cushioned at the front to soften impact on TV screens, etc.
After a bit of hunting, I found this service is available to UK Wii owners too and you can order more than one. They'll be including them with all future Wiis and Remotes.
Just placed my order for two.
Nintendo UK Wii Remote Jacket Request