Product launches at the IFA consumer electronics fair in Berlin are giving consumers an unprecedented choice of screen sizes. But analysts are questioning whether consumers can learn to love them all.

Now you see it, now you don't: Samsung Electronics erased all traces of the Galaxy Tab 7.7 from its exhibition stand at the Internationale Funkausstellung (IFA) in Berlin on Saturday, just two days after launching the tablet there.

Hoping to boost sales of its 3D televisions among gamers, LG showed off technology that lets traditional split screen multiplayer games be played full screen.

German researchers have given a new meaning to window shopping. At the IFA consumer electronics show in Berlin the Fraunhofer Heinrich Hertz Institute showed a prototype that lets shoppers learn more about what's in a store display window when the store is closed.

Sony's Personal 3D Viewer, introduced at the IFA consumer electronics show, will offer consumers an alternative to 3D televisions and will be available by the end of this year, according to the company.

The IFA has a storied past as well as notable celebrities and some "first" technology ever seen in Europe. From Einstein to Xbox, the IFA has shown it all. Some products, like the 3DTV, were ahead of their time. Others, like the MiniDisc...well, just never got off the ground.