Lisa Kudrow has been “celebrating” Matthew Perry by watching old episodes of ‘Friends’. The 60-year-old actress – who portrayed Phoebe Buffay in the long-running sitcom – spent years unable to tune into the show because it was “too embarrassing to watch” herself but she is now rewatching the programme as a way to pay tribute to her late friend and co-star, who died last October aged 54. She told The Hollywood Reporter: ““Honestly, I wasn’t able to watch it because it’s too embarrassing to watch yourself. But if I make it about Matthew, then that’s OK. “And it’s just celebrating how hilarious h…