What's the worst movie you've seen that looked good in the trailer?

You know how it is. You see a trailer of a film, it looks amazing, you
go see it and it turns out to be the biggest pile if crap you've ever
seen. Those "best" bits were either at the start, middle or the end,
the rest was freakin boring.

No.1 for me was The Day The Earth Stood Still. A total waste of time
and money.

How about you guys and ladies?