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Pic caption: Courtney Cox Arquette * ALL GOOD FRIENDS Star-studded Sunday afternoons don't get much better than this - well, if you're part of the Cox-Arquette clan, that is.. Courtney Cox and David Arquette recruited pals Jennifer Aniston, Sacha Baron Cohen and a heavily pregnant Isla Fisher for an afternoon of fun and frolics in L.A.. The fabulous fivesome were hanging out chez Cox-Arquette, enjoying a tasty barbeque at the couple's Malibu beach house.. Borat bloke Sacha was delighted by the view from his friends' balcony, happily snapping away with his camera at the dolphins swimming in the ocean ahead.. Things were a bit different for one of the party, however - poor little Jen.. The reportedly once-again-on-the-market star was the sole singleton of the soiree, and spent much of her time playing with a dog.. After her alleged split from hunky Brit Paul Sculfor, perhaps she's swapping men for the next best thing.... man's best friend? We wish you all the best, Jen.... (JC/WN/)