SCO has been threatening to sue a high-profile Linux user for some time now, insisting as they do that THEY own the rights to Linux (poppycock, as Gartner has said, among others). An anonymous source is cited today in Linuxworld saying this high-profile target may well be Google, which would be provocative indeed.
Almost certainly a doomed effort, but provocative, at least. The real question is whether Microsoft is involved in this thing somewhere, since we know they loathe Open Source, and we also know they want to buy or destroy Google.