Before watching this I didn't know what it was about and I was sincerely hoping for a movie after the Vash and Knives fight. The anime leaves you wanting. I hate endings with cliffhangers.
Or at least of if this was supposed to be a fanservice movie they could have shown us knives and the other Gung Ho Guns in some cameo shot or something.
Even Legato and girly hair would have been welcome
Edit: still a funny/good movie