| Holy all-star tributes! TMZ reports that John Mayer, Usher and Whitney Houston are collaborating on a cover of Michael Jackson's 1993 single "Will You Be There" for charity. Also involved with the project are Dionne Warwick, Lionel Richie, Jermaine Jackson and Larry King's wife Shawn, who's leading the charge on the tribute. The proceeds from the song will be split between the Larry King Cardiac Foundation and an as-yet-undisclosed charity close to the deceased singer. In case you missed Mayer's |