Jeremy becomes the wingman tossed on the grenade of true love blossoming between John and Treasury Secretary William «The Next President» Cleary's (Christopher Walken) eldest daughter Claire (Rachel McAdams)-- the grenade in question being Cleary's younger daughter Gloria (Isla Fisher, effortlessly walking away with the film), some kind of
nymphomaniac psycho who serves, Boomerang - like, as the counterpoint to Jeremy's voracious sexual predator.