Yo ho ho. 'Pirates of the Caribbean: On Stranger Tides,' the fourth entry in the Disney franchise, heads up the list of home video releases this week, offering pure fun and adventure as Johnny Depp and Penelope Cruz swash buckle their way across the screen. If 'Pirates' gives you scurvy, there's always 'Bad Teacher,' a rather disappointing comedy starring Cameron Diaz that basically offers up a female version of Jack Black from 'School of Rock' (though she's a lot easier on the eyes). And, for fans with a sweet tooth for 'Willy Wonka & the Chocolate Factory,' Warner Home Video has put together an impressive 40th anniversary set. Read on.