Mad Libs are a fun way to review parts of speech by filling in the blanks and creating a story that can be at times ridiculous!  Below is a link to the history of Mad Libs and a link to some Mad Lib activities:

History:  http://www.madlibs.com/history/

Activities: http://www.redkid.net/madlibs/

If you like these, there are also plenty of apps available!