ROLL AND ROLL
   20 film titles with 10 words or more:
                        1	Come Back to the Five and Dime, Jimmy Dean, Jimmy Dean
2	A Funny Thing Happened on the Way to the Forum
3	The Saga of the Viking Women and Their Voyage to the Waters of the Great Sea Serpent
4	The Incredibly Strange Creatures Who Stopped Living and Became Mixed-Up Zombies
5	Oh Dad, Poor Dad, Mamma's Hung You in the Closet and I'm Feeling So Sad
6	The Adventures of Buckaroo Bonzai and the Hong Kong Cavaliers in the Eighth Dimension
7	Who is Harry Kellerman and Why is He Saying Those Terrible Things About Me?
8	Sword of the Valiant: The Legend of Sir Gawain and the Green Knight
9 Pirates of the Caribbean: The Curse of the Black Pearl
10	Can Heironymus Merkin Ever Forget Mercy Humppe and Find True Happiness?
11	The Englishman Who Went Up a Hill But Came Down a Mountain
12	Went To Coney Island On A Mission from God ... Be Back By Five
13	Been Down So Long It Looks Like Up to Me
14	Night of the Day of the Dawn of the Son of the Bride of the Return of the Terror
15	Don't Be a Menace to South Central While Drinking Your Juice in the Hood
16	Dr Strangelove, or How I Learned to Stop Worrying and Love the Bomb
17	Sherlock Holmes in the Singular Case of the Plural Green Moustache
18	The Effect of Gamma Rays on Man in the Moon Marigolds
19	Those Magnificent Men in Their Flying Machines, or How I Flew from London to Paris in 25 Hours 11 Minutes
20 The Persecution and Assassination of Jean-Paul Marat as Performed by the Inmates of the Asylum of Charenton Under the Direction of the Marquis de Sade
 Barred from the list: a) long sequel names  b) early descriptive film titles such as Man Going Over the Old Willy Waterfall While Strapped in a Barrel c) documentary feature titles such as Tears and Beers, the Tragic Story of the 1976 All-England Ale Drinking Championship (these last two made up) d) unverifiable foreign titles
   Source: various (no more needed, thanks) Thanks to Andy K for the idea.