SMBMounter is a simple commodity with an easy-to-use GUI which allows you to save a list of shares, create and edit them easily, and mount and unmount them at the click of a button. Because it's a commodity, it will happily sit in the background and pop up whenever required with a hotkey. It uses SMBFS (and portions of Samba) to do the actual nitty-gritty networking stuff, but takes the nasty edge off coming up with the command-line arguments yourself.
