That anti-trust suit against Nvidia and ATI from back in 2006 is still ongoing, with some interesting developments occuring recently. The two graphics chip manufacturers were hoping to keep certain evidence from being presented to a jury, but Judge William Alsup was not impressed. Especially since this was emailed by Nvidia's Dan Vivoli to ATI's Dave Orton in 2002:

"I really think we should work harder together on the marketing front. As you and I have talked about, even though we are competitors, we have the common goal of making our category a well positioned, respected playing field. $5 and $8 stocks are a result of no respect."

The ongoing class action suit alleges that ATI (now AMD) and Nvidia kept prices artificially high by releasing products at the same time and at similar prices. NVidia recently slashed prices after ATI released a highly competitive video card at a much lower price point.