Launch date: 2006

Fatal flaw(s): Expensive, bad battery life, no keyboard

Like the OQO Model 1, the Samsung Q1 pre-dated the tablet movement. It featured a touchscreen, massive hard drive space, and decent specs. But it ran Windows XP and cost as much as a laptop. Combine that with its less-than-stellar battery life and you had a product that was good to look at in the store.