I just watched the Kings Speech with my wife, and I have to say that it was one of the most brilliantly acted films I've seen in ages. Colin Firth played the stammering George XI to perfection, and Geoffrey Rush's performance was a thing of beauty!
Helen Bonham Carter deserves a mention for her role as Queen Elizabeth as well.
Also, Due Date is alright if you don't mind Robert Downey Jr and Zach Galifianakis. I got quite a few chuckles out of that one!