I encourage you to read NYT's article titled "We're Google, so sue us":

Many of the lawsuits Google is facing carry little weight. Yet it has a vested interest in fighting all of them, even those of questionable merit, and seeing that they are resolved quickly. In part, this is because any lawsuit that reaches the discovery, the pretrial fact-finding phase, poses the danger of revealing too much about Google’s proprietary technology. Google also has an interest in establishing a solid body of legal interpretation in its favor.

Along with YouTube’s 34 million viewers, Google will inherit a lawsuit filed last summer against the company. Robert Tur, who owns a video from the 1992 riots in Los Angeles that shows a trucker being beaten by rioters, is suing YouTube, accusing it of copyright infringement.

Hmm, I wonder what it's going to look like. The court decisions will certainly revolutionarize copyright laws.