Moriarty at AICN has reviewedX-Men: The Last Stand, and he states "...X-MEN: THE LAST STAND is not only a worthy addition to the franchise, it actually feels like it is simply part of one big movie, absolutely on par with the first two films." Moriarty is the level headed reviewer at AICN and his take on films is usually spot-on. The first two films were very good (screw you, haters), so all I can say is... Xcellent... Sorry, couldn't resist.
There's a nice looking new Superman Returns trailer out (that's a direct link to the clip). While it looks better than the last few, I have to admit it still feels rather underwhelming so far despite the strong imagery. But hey, until the actual film is out, I'll reserve judgement.