Glaicer Gloves are really nice for those 30'ish degree and colder days of riding.
823BK is a nice glove from GG
Many outdoor outfitters carry Glacier Gloves or similar brands. The nice thing about the ice fishing gloves is that they have curved fingers and they aren't as bulky as ski gloves.
Performance Bikes carried a nice thin neoprene glove at a cheap price. I bought a pair last year and they've held up well. I'm not sure if they still carry them.