1. What star had to lose 15 pounds of 'X-Men' muscle to play Jean Valjean in 2012’s 'Les Misérables'?

2. Back in April, Jimmy Fallon read a list of “top 10 reasons why” what fellow late-night host “is retiring”?

3. What “Thanks for the Memories” comedian headlined 57 USO tours for American military personnel?

4. In 2008, what daytime TV personality married longtime partner Portia de Rossi at their California home?

5. What then 60-year-old 'City Slickers' actor signed a one-day contract with the Yankees in 2008 and struck out in a spring training game?

What’s the "Kennection" between all five answers?