Obtain the MD5 hash of the Finder selected file.
To install just download and doble click the .alfredextension file.*
To run just select in Finder the file you wish to hash then open Alfred bar and type “md5”
A growl sticky note will appear with the corresponding MD5 hash.
Also is sent to your clipboard.
*You need to get a Powerpack Alfred License to install extensions.
Idea courtesy of albertogg
Update: Now can pass an argument if you want a quick MD5 of some text. To use just type “md5 theText”