[GuB-42]

My favorite "no budget" moment was in Kare Kano, a lesser known Gainax adaptation of the shoujo manga of the same name.

The second half as a whole is clearly made on the cheap, but episode 19 is special, it is all paper cutouts on a stick, most likely from the storyboard, on top of recycled backgrounds.

[jcl]

My favorite was toward the end of the Evangelion series, where they generated flashback footage by shooting the backs of earlier cels.