I'll categorize these:
The strained attempts to be clever by inserting a number where a word should be:
-Step Up 2 the Streets
-Madagascar: Escape 2 Africa
-2 Fast 2 Furious
-the upcoming 5nal Destination
The painfully generic
-Definitely, Maybe
-The Room (The movie, however, is most certainly not painfully generic.)
-Fighting
-Moon
-Rachel Getting Married
The overlong and clunky
-Transformers: Revenge of the Fallen (Does ANYONE call it that?)
-the upcoming Legend of the Guardians: The Owls of Ga'Hoole
-The Bad Lieutenant - Port of Call: New Orleans (Love the movie, though.)
-Ballistic: Ecks vs. Sever
-The Assassination of Jesse James by the Coward Robert Ford
-X-Men Origins: Wolverine (Also another presumptuous move, adding the "X-Men Origins" brand. Doesn't look like there'll be too many more of those, does it?)
-The House That Dripped Blood on Alex, Tommy Wiseau's follow-up to The Room. This one is actually kind of great.
Special mention must be made of the following:
-I Still Know What You Did Last Summer and I'll Always Know What You Did Last Summer
-the Rambo franchise - You start with First Blood, and follow that with Rambo: First Blood Part II (not Rambo II), and then it's Rambo III, and finally the fourth film is just Rambo. Some interesting choices there.