Yeah from the Crysis folder just go Game -> Localized -> Video and delete anything that ends on *.sfd except for bg.sfd which is the menu background video.
To that I'd like to add that this game responds very quick to ALT+F4, which can be used, not only to skip the last annoying "Buy this game now at EA's crap onlineshop", but actually to quit the game anytime from the menus or even from in-game in a splitsecond
