I don't watch trailers. I dive into the muck head first then complain about the smell later.I could tell from the trailer. Plus, no matter how old Ice Cube gets, he'll never be Jeffrey Wright.
But @TB has already given you a good source to head to.Well it tells you what the plot is and all the characters and the people who played them. But it would spoil the movie for the user/person. I'll find a workaround to better organize my movies/comedies.