Where to start? Most 82 shows (very unreliable sequencers), Sobell 85 is a classic one, JD Erics 79, New Order Chicago 83 (where the sequencers failed halfway through the set, and they'd already played the guitar songs), New Order Denver 87 (sequencers failed after 8 of 12 in the set). Literally dozens of equipment problems, but the best one of all was Washington 83.
Hooky disappeared before the gig. They took to the stage without him, but with Rob as mysterious 4th member. The only song they could play realistically without bass was IALP, with Rob on cymbals. Hooky turned up at the end of it, jumped on stage with an "alright shitheads", and began Ultraviolence!