Whilst looking through my old VHS collection, I found this interesting documentary about the first 20 years of Jethro Tull. It was cut down to fit an hour slot on ITV's Night Time schedule.
This was taken from a Mono VHS recording from 1989 (Thanks turkytreat for the correction), and amazingly, 20 years down the line, the same VHS player was used to transfer the original analogue tape to the capture card! They don't make electronics like they used to ;-)
20 Years of Jethro Tull (1988) is a video by Jethro Tull, also known as Jethro Tull: This Is the First 20 Years. It consists of interviews with fans and frontman Ian Anderson giving a rough chronology of the band, interspersed with clips from music videos and live performances. Many of the live performances are culled from the Madison Square Garden performance during the 1978 Heavy Horses tour.
More information on this artist is available in the last.fm tabs below.