Not the most outrageous, but I had a client incur about 20 additional hours of billable hours because he and his ex-wife were battling and went to trial over their Star Wars Collection. This was the only issue at trial, they were able to work out custody, child support, the house, but the Star Wars collection went to trial.
The Judge ended up splitting it in the most assholish way possible, basically giving each side half of what they wanted and then mixing and matching everything else and breaking up ‘collections’.
SA