[Neil Jones]

Kirsty's Home Videos ran for five series worth apparently, which is relatively popular for Sky. Most Sky stuff only ran for one, two or three series, so anything that ran longer than that was effectively a runaway success for them (the obvious other examples here in this period are Brainiac and Road Wars)

But yes Kirsty was a pretty much a carbon copy of You've Been Framed. Not sure how "unique" you could make a format that basically consists of people sending in clips, though it started life as a segment of a Japanese show IIRC which was later spun off.