So as to not jack up panthro's thread, I'll start my own about liners.

I've got a good pair of Tourmaster gloves, but once the temps drop into the freezing range and lower, I need heat.  So, does anybody make a thin, heated liner that I could put on then slip my gloves on over?  I know I can get heated gloves, but really would like to just have a liner ~

JM

Whenever one needs touring gear, or long-distance gear, or anything of that sort, I tend to look to the BMW crowd... 

Gerbing's is a popular choice.
http://www.gerbing.com/Products/Gloves/liner.html

Another option:
http://cozywinters.com/shop/wg-phgl.html
(can't speak to how thin these are)