This cut-and-paste hoax strung multiple audio samples of Oliver into sentences to make the self-styled champ of healthy school grub say the most comically unlikely things. Amusing parodies of Tony Blair and Jeremy Clarkson surfaced, too, all the work of the mysterious Cassetteboy.

What began as a minor web-sensation is, it turns out, also a stage act. Cassetteboy extends the joke, with two besuited pranksters in ape masks miming the actions to a daft medley of football commentators, newscasters and wildlife presenters being made to say the most unlikely things.

It's a one-trick pony that divides the audience: it's mildly amusing to some, while others join a half-hearted chorus of "Off! Off! Off!"

The real draw of the night is an act signed to the ground-breaking, Sheffield-founded Warp Records. Squarepusher is one man, his laptop and a bass guitar. Tom Jenkinson seamlessly merges a spasmodic, pulsating catalogue of computer-generated beats, bleeps, scrapes and scratches with virtuosic bass playing.

There are those in the Refectory who stand awestruck at Jenkinson's superhuman musicianship, the way he slaps, taps and teases incredible sounds from his bass. Most, however, just lose themselves in an uplifting melding of metallic beats and the human sound created by Jenkinson's right thumb, four left fingers and one guitar. It's an awesome sound created by one man who, making it seem all so easy, barely breaks a sweat.