Atari 2600 (*cough*)
I work in IT and older 19 & 20 inch 4:3 screens surround me (Everyone wants 24 inch wide screens now), some even have a composite port right on them. Those worked okay with mixed results. I wanted to be able to split the image to multiple locations because one screen was getting too crowded. The VGA adapter was around $20 online and the Tripp-Lite splitter was bought at online auction used for about the same. It works pretty good, but I haven't tried it with a wide screen monitor yet. It should work but most people don't like having their normal body shape at 4:3 stretched to 16:9 on screen...