Scott Pilgrim is a great combination of anime, manga, and comic book cliches with videography and cinema classics that required an incredible amount of VFX work.  Over 1,200 VFX shots are in the film, and fxguide has an interview with the folks at Double Negative and Mr. X about some of their contributions that required not only your typical post-processing work, but some clever physical work on-set to get the desired results.

“Michael Cera would punch a blue pad which would trigger off photo flash bulbs that would illuminate everything at the same time. So there’s a photo flash bulb going off when they make a connection but there’s also a ‘lightning strike’ light which has 70,000 watts of power as Patel spins across the club.” Double Negative performed a morph transition between two shots in the Patel fight to create a crash zoom out as Scott punches his adversary, adding camera and ‘colour shake’ that cycled through frames of block colour for a stylised look.

via fxguide – after effects vfx – Scott Pilgrim and VFX Against the World.