SANTA MONICA, Calif., March 16, 2000 -- "Ally McBeal" is getting a new friend: Indie guy. James LeGros James LeGros, the so-called Brad Pitt of the indie film world, is set to join the cast of Fox's hit lawyer show -- a sort-of testosterone reinforcement as series stalwart Gil Bellows prepares to exit. According to reports today, LeGros will bow on the show in May (as in, yes, the May sweeps). The 37-year-old actor will play a thirtysomething lawyer name of Mark Albert. In USA Today, "Ally