I think the Google-Sun coziness is a great move for both companies. Those with common enemies automatically become friends. Though the specifics of this alliance are few at this juncture, I personally think this is great move. Though everyone on the planet (including Sun employees) appear to have given up on Sun, I think the company is not over yet. For starters the StarOffice product which has been languishing for years might at last gain some momentum (with help from Google) as a re-furbished web-based solution.
As for Google, this is just an extension of the their grand scheme of taking over the world (and of course doing no evil!).