<p><br /> Jennifer Aniston has praised her latest co-star Jason Bateman saying she believes his part in new flick The Switch is his best to date:<br /> </p><p><br /> "I hope I'm not being biased but I really think that this is his greatest performance ever. It's hilarious, it's also moving and heartbreaking and I just think he's fantastic," said the actress.<br /> </p><p><br /> The Switch sees Jennifer play a 40-year-old, single woman called Kassie, who is longing for a child, with Jason as her best friend Wally. When Kassie decides to inseminate herself and has a party to celebrate, Wally switches the sperm of her preferred donor with his own!<br /> </p><p><br /> "For me I kind of liked the message that, I don't know that people will pick up on, but it's certainly what I liked, which is that a best friend is not necessarily a bad candidate for a long term relationship," said Jason.<br /> </p><p><br /> "It's worked for me in my life, with my wife, so, that's kind of what this movie is saying," he added.<br /> </p><p><br /> The Switch is out in the UK September 1.<br /> </p>
