I recently became acquainted with E.S.P. TV's trippy live video manipulations at The Index Festival, an insanely well curated festival of experimental music. On one night of the festival at the longstanding downtown avant-haven Milennium Film Workshop, knob twiddling excursions from folks like Shelley Burgon and Twistycat were made a lot more visually exciting by placing the musicians in front of a green screen and superimposing faded out zebras (or what have you...), shifting geometric patterns and video feedback loops.
It seems like only Twistycat's footage from Index is up online at the moment (and is posted below), but ESP seems to post every episode of their shows on Vimeo after editing them down and airing them on Public Access TV. Episode 5 is below as well, with a Forma performance introduced by Sam Mickens, Ana Lula Roman w/ video artist Matthew Caron and video shorts by Aaron Nemec, Derek Larson and Scott Kiernan. One of my favorite bits appropriates an episode of Cheers and superimposes measurements of lengths pointlessly over everything. Long live analog electronics!!