Melanie Griffith's drying out, an Amy Winehouse love letter sparks a lawsuit and Robin Williams may channel Susan Boyle. That — and more — in your Tuesday morning Gossip Roundup. Delicious!

• Melanie Griffith has checked into rehab for a third time, but her doctor says it's simply "routine." At this point, yes. [Mirror]
  
  
• Robin Williams has been asked to play Britain's Got Talent singer Susan Boyle in a biopic about her life. Sounds like a perfect fit. [Page Six]
  
  
• Singer-turned-loon Amy Winehouse has filed a £50,000 lawsuit against her former mother-in-law, who Winehouse accused of copyright infringement for selling one of her rambling love letters to her ex-husband. [The Sun]
  
  
• Ed Swiderski, the man who shocked — shocked! — the world by cheating on his Bachelorette "girlfriend" insisted he never took the show seriously. [Us]
  
  
• Katie Holmes and Tom Cruise inspired a Scientology fashion line. That says it all. [The Guardian]
  
  
• Lesbian tennis star Martina Navratilova former beauty queen girlfriend Julia Lemigova once dated Swiss banker Edouard Stern, who was murdered by his lover in a sadomasochistic sex romp. That may be the most titillating gossip we've heard in a long time. [Daily Mail]
  
  
• American Idol winner David Cook's so secretive about his love life that he refuses to buy anything for his girlfriend. Wait, isn't that just cheap? [Page Six]
  
  
• Sex tape and reality star Kim Kardashian will direct an "unscripted show" about her publicist friend Jonathan Cheban. [Page Six]
  
  
• Now that Eddie Cibrian and LeAnn Rimes are out in the open about their adulterous relationship, Cibrian's wife is free to rip him to shreds. She describes him as a "a compulsive liar, cheater and a home wrecker." Well, we know at least two of those things are true. [Gatecrasher]
  
  
• Ian McKellen went to see his friend Rachel Weisz in A Streetcar Named Desire. That's just sweet. [Just Jared]

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