For the sake of full disclosure, I should preface this by saying that I have never seen Harold and Kumar Go to White Castle, the movie. But I have seen the trailer, and I give it a solid A. Very funny stuff, especially since it brought about the comeback of one Neil Patrick Harris. Having seen that trailer, I'm as qualified as anyone to review this trailer, then, so let's begin: Harold and Kumar decide to go even farther than White Castle this time. Their target destination? Amsterdam. But where they end up, thanks to Kal Penn (who is Indian) looking and acting like a terrorist (don't try to apply logic to it, or it stops being funny)? Guantanamo Bay. And then, you really have to suspend your disbelief, because they escape. And end up at some guy's "bottomless" party (because he's really tired of the whole "topless" thing). From there they have another run-in with Neil Patrick Harris, which seems more been-there-done-that than funny at this point. There is such a thing as overusing a good thing until it's not all that good anymore. There is a pretty funny appearance by Rob Corddry, and a slightly less funny appearance by Ed Helms. It's mostly a lot of jokes about race and politics (they even end up in President Bush's home, where the Prez (obviously an actor; not the real guy) laughs with them and says, "They thought you were terrorizers?"). This one's going to have a few laughs and more than its fair share of trying-too-hard-to-repeat-the-past moments. But with John Cho and Kal Penn, it's bound to be at least as funny as any other comedy sequel. Which is to say, not that funny.

Reviews by people who have actually seen it:
Variety
Rotten Tomatoes