Jessica Simpson and Nick Lachey Jessica Simpson and Nick Lachey

Not-so-newlyweds Nick Lachey and Jessica Simpson now have other things on their plate besides refuting breakup rumors. Lachey will serve as a regular contributor to ESPN's College GameDay, whioch returns for its 10th season on Sept. 3. Then, on Sept. 11, Lachey and Simpson will sing "America the Beautiful" before the Redskins-Bears football game in Landover, Md., as part of the NFL's tribute to the fourth anniversary of the terror attacks.