"Time Trumpet" is to clip shows (of the "I Loved 1997" style) what "The Day Today" was to news, and in many ways the approach is the same. Staying straight-faced at all times, it totally undermines the whole genre, lampooning politics, celebrity culture and modern life in general. It's classic Iannucci and it's brilliant from start to finish.
Pretending to be a clip show from 2031, it looks back on 'the past' of 2007/2008/2009, which at the time of broadcast was the imminent future. 'Celebs' reminisce about what happened when the 2012 Olympics turned out just to be a big prank by The Friday Night Project and Seb Coe killed Justin Lee Collins. There's archive footage of the war between Tesco and Denmark in which Tesco Express stores have gained War Of The Worlds-style tripod legs and are rampaging over Copenhagen firing lasers.
There are 'present day' 2031 interviews with 'David Beckham' (really very convincing), 'Anne Robinson' and some of the then-prominent politicians such as Charles Clarke. It's only in Iannucci's deep interest in politics that "Time Trumpet" might already seem a bit dated- many of the gags relate to the Blair/Brown leadership swap-over.
Comics like Stewart Lee, Richard Ayoade, Matthew Holness, Mark Watson, Jo Enright and Adam Buxton (who also contributes some sketches) are all great stuff and if you're a fan of any of those people you'll enjoy their contributions. They're all willing to send themselves up. Stewart Lee asking why it was necessary for him to shave his head just to appear on a clip show is a must.
Unlike "The Day Today", "Time Trumpet" got largely overlooked at the time, which is a real shame as it's just as good and another essential piece of Iannucci TV.