The recent "Ben is Angry" post put me in mind of a conversation I've had with a few engineers over the years (usually involving alcohol) - what's the worst product you've ever tried / bought / tested / released?
When I was a kid my Dad borrowed an Amstrad combined TV and VCR from his work. It had one of the worst user interfaces I've ever seen - two buttons that did different things at different times. Being a geek I pride myself on hardly ever referring to manuals, and certainly never more than once, but this thing required the manual to be kept next to you on the sofa. Case in point - when changing the channel it eschewed standard channel identifiers (e.g. 1, 2, 3...) for the frequency of the channel (e.g. 39, 41...). You had to scribble your local channels on the back of the manual or waste time clicking through them all.
The other major fail was that in order to record a programme you had to have the TV set to that channel and in standby mode. So this prevented you from watching a programme on another channel while you were recording, or even watching the programme you were currently recording.
All in all, a complete failure.
