Olver has a great story to tell (about freakishly damaging his leg during a show but carrying on in between bouts of unconsciousness) but he takes an age to get there. There are some whimsical flights of fancy in his set but he is ultimately drawn too far into audience chit chat. (Brian Donaldson)

Pleasance Courtyard, 556 6550, until 28 Aug, 8.25pm, £8.50-£9.50 (£7-£8).