Here's a list of all the interesting upcoming cinema for 2006 (UK release dates taken from IMDB).

February:

* 3rd Walk the Line, Zathura
* 10th Final Destination 3
* 17th Aeon Flux
* 24th The Fog

March:

* 3rd Evil Aliens
* 10th The Hills Have Eyes
* 17th V for Vendetta
* 31st Firewall, Slither

April:

* 21st When a Stranger Calls, Hostel

May:

* 5th MI 3
* 19th The Da Vinci Code
* 26th X3

June:

* 2nd Poseidon
* 19th Venom (DVD?)

July:

* 6th Pirates of the Caribbean: Dead Man’s Chest
* 14th Superman Returns
* 28th Garfield 2, Cars

August:

* 4th Miami Vice
* 11th Monster House
* 18th Sin City 2
* 25th Lady in the Water

September:

* 22nd World Trade Center

October:

* 6th The Reaping (Dark Castle?)
* 20th The Grudge 2

November:

* 17th Casino Royale