Ed Helms Takes Over From Chevy Chase in the New 'Vacation'

So, I do love the original Vacation, but isn't it striking how this trailer is basically trading entirely on the memory of jokes and clips from the original movie? I know they make the self-conscious references to what they're doing in the movie (ala 21 Jump Street), but does that really make it any better? Eh- maybe it'll be good for a couple of funny moments, but probably the only reason this is coming out is due to the success of We're the Millers a couple years ago.