Uhmm, this is an interesting variation. There are many comedy posters like this, with the title treatment in the bottom against a white background and some image occupying most of the rest of the poster. But in this case instead of the image being some inane depiction of the main characters together, like what we have in the poster for Along Come Polly, it is an image from smack in the middle of what is sure to be one of many physical jokes from the actual movie.
I like it. It makes the poster more funny, and gives everybody a good idea of the kind of comedy this is going to be. And it still manages to do the obligatory reminding of people that Ben Stiller is in it.
A decent effort.