How can I mount an SMB share from the command line? I would like to mount an SMB network share from the command line (terminal); how would I go about that?

I am using Mac OS X 10.6.4.
You could easily achieve this using mount_smbfs (which is, actually, a wrapper for mount -t smbfs) : 

mount_smbfs //user@SERVER/folder ./mntpoint


Optionally, add the workgroup :

mount_smbfs -W workgroup //user@SERVER/folder ./mntpoint


You could, of course, change the ./mntpoint (for something like /Volumes/smb).

After doing this, simply go to ./mntpoint to browse your data.

To unmount, using the following command : 

umount ./mntpoint