Attention baseball fans: You can now create a digital bobblehead of yourself or a friend, wearing your favorite Major League Baseball uniform, courtesy of XM.

You choose any MLB uniform, upload a photo, and with a few clicks, you've got yourself a head-wagging bobblehead (complete with annoying rattle-sound). You can also download the image, and email it to your friends with a little musical accompaniment. The tuneful choices range from a lounge version of "Take Me out to the Ballgame" to a truly stunning a cappella rendition by Boston Red Sox slugger David Ortiz.

This is the latest addition to the free web site set up by XM to promote the broadcasts of every MLB game for every team. This is the same site that lets you send personalized phone messages from Ortiz and Derek Jeter and, and it now has ring tones and voice-mail greetings from Jeter and Big Papi, too.

Check out Lil Jimmy's bobblehead page here or make your own at XMbaseball.com.