Bar Martignetti on Broome Street, which takes a dig at how celebrity-infested Butter's bashes are, hosted its first one last week. "Imitation is the most sincere form of flattery, but after five years it is clear that everyone prefers the real thing. All Butter alternative products should remain on the shelf," quipped Akiva. Bar Martignetti owner Anthony Martignetti replied with, "Our party is a lot more fun."Maybe they can settle this with a butter fight - where they all lather each other with butter and fake butter and wrestle on Lafayette. Who wouldn't watch that?