There’s a special, delightful chemistry on view tonight, as two former Friends continue to play well together in Lisa Kudrow’s Showtime comedy series. She plays a goofy online therapist named Fiona – and last week, she met a new client, an online gambling addict played by Matt Matt Le Blanc. He, of course, played Joey to her Phoebe on NBC’s Friends, which began nearly 20 years ago. And here they are again, just as much fun to watch. In tonight’s show, his character discovers that Fiona has been spying on him by playing online poker at the same virtual table.