CNet has written up a list of the so-dubbed Top 10 Worst IT Products ever. Aside from the bluetooth keyboard shown up there, I'd say that list is pretty accurate. Some of them are just downright hilarious, such as a "portable email" device that require you actually hold the device up to a phone while it makes an analog connection in order to send messages. That's pretty bogus, but someone actually thought that up and said "This is a great idea." Unfortunately for them it wasn't, and now we get to look back on the past few years and have a laugh.
If you are nostalgic, you will recognize the #1 Worst IT Product, and it really isn't a surprise. It's the predecessor to the annoying office PaperClip. Although not all of that is strictly hardware, it's a great read.