Judge Posner loves to put pictures in his opinions. You can see some of his prior pictures here and here and read those opinions on the Seventh Circuit Court of Appeals website.
Judge Posner recently issued another opinion containing a photo--and this one is really bananas! The plaintiff, known as the "Banana Lady," sued several credit unions for allowing their employees to take photos of her (and post them on Facebook) as she delivered a singing telegram at a credit union trade association event.
Posner squashed the Banana Lady's appeal, but not before putting a half-page picture of her in costume on the second page of the opinion.
The opinion is Conrad v. AM Community Credit Union, No. 3:13-cv-461, 2014 WL 1408635 (7th Cir. April 14, 2014). You can view it here.