One of the features missing from OS X is a keyboard trigger for creating zip archive files. With this Alfred workflow you can take the top most active finder window select your files and then use the keyboard trigger to create the zip archive.
You'll need to grab a copy of Alfred
And grab a copy of the Alfred PowerPack
Double click on the Archive files and folder.alfredworkflow
You can use the workflow by setting up your own keyboard trigger or by using the keyword zip