i cannot say enough good things about this mug for coffee commuting:
http://www.amazon.com/Oxo-Good-Grips.../dp/B0001YH1LG
i have two. it fits in my water bottle cage or i can throw it in any pannier or trunk without worrying about spillage. i brew my coffee @ home, put it in my mug and can transport it on my 8 mile trip and have it still hot when i get in.
