I've seen a few movies recently, and can recommend all of them for various reasons.
Duplicity is fun, and if you like Giamatti, he has his moments. I am developing a huge man-crush on Clive Owen*, and Julia Roberts is better than she's been for years. Plus the ending is neatly twisted.
Clive Owen rocks again in The International, a somewhat uneven film redeemed (imho) by excellent acting top to bottom, from Owen & Naomi Watts to Armin Mueller-Stahl, Ullrich Thomsen (who also has a small role in Duplicity) & Brian F. O'Byrne as the guy Owen spends most of the movie chasing. But the main reason to see it is the shootout at the Guggenheim, which does for shooutouts what Bullitt did for car chases.
Monsters vs. Aliens is fun, and the 3D is great. But not quite up to Pixar level.
I Love You Man was great for all the reasons Mike already posted, and may I just add that J.K. Simmons is the M. Emmitt Walsh of this generation.
State of Play was also really good, again the ensemble acting somewhat better that the film as a whole (although in her last couple scenes Helen Mirren kind of mails it in). And I still want to see the Bill Nighy BBC miniseries. However, like the Chron review, I think they whiffed on the ending. I've been accused of spoilers before, so let me just say that I envisioned Robin Wright Penn's character being used differently at the end. If anyone else sees this let me know, I'd really like to suggest an alternate ending.
*if you don't know much about Clive Owen, see the following Gosford Park (another great plot twist at the end), Children Of Men (a great plot twist 1/3 in!), Inside Man (sequel filming now with Spike & Denzel both on board!), Sin City (again with the sequel), and of course his Oscar nommed role in Closer.