How many times has Michael Caine played a butler in any capacity?

At least once in the future:

British star SIR MICHAEL CAINE is being tipped for the role of butler ALFRED in the new BATMAN movie. The DIRTY ROTTEN SCOUNDRELS actor is reportedly the frontrunner for the part, which would see him starring alongside fellow Brit CHRISTIAN BALE as the Caped Crusader, although producers WARNER BROS have declined to comment over Caine's mooted role.

contactmusic.com/new/xmlfeed.nsf/mndwebpages/caine%20for%20butler%20role%20in%20batman. [no longer exists]

BRY, thats not a future film, Batman Begins was released in 2005 with Caine as Alfred.

http://www.imdb.com/title/tt0372784/

The Sequel will be released this July and also stars Caine as Alfred.

http://www.imdb.com/title/tt0372784/