Jason Segel and Amy Adams co-starred in The Muppets.
Amy Adams and Reese Witherspoon were both featured guests on Matt Damon's takeover of Jimmy Kimmel's show (one of the greatest episodes in the history of the show, by the way).
Reese Witherspoon starred in How Do You Know, which also featured Amanda Freed.
Amanda Freed and Cat Osterman were teammates on the 2004 Olympic-gold-medal-winning Team USA squad.
Cat Osterman and Courtney Ceo are presently teammates on the USSSA Pride.
So from Jason Segel < Amy Adams < Reese Witherspoon < Amanda Freed < Cat Osterman < Courtney Ceo, we have our connection in FIVE DEGREES.