Applescript
I’ve recently discovered the Joy of Applescript.
Applescript can be used to very easily mount SMB shares. Open /Applications/Applescript/Script Editor, and paste in the following script (change the variables to match your setup):
tell application "Finder"
open location "smb://user:password@computername/sharename"
end tell
Save the script as an application, and be sure to check “Do not show startup screen.” This will yield a clickable item that will behave like any other app, and can be used to quickly connect to an SMB share.