No, this is not a joke of the "Keith Van Horn for Jason Kidd" variety. Mark Cuban was actually charged with insider trading by the SEC. The last celebrity I can recall getting an insider trading charge was Martha Stewart, and that didn't work out so well for her. Imagine how AWESOME it would be if Cubes went to jail. If Dirk Nowitzki were here, he might describe my reaction to this development as "schadenfreude" (a German word meaning "satisfaction or pleasure felt at someone else's misfortune"). Man, I really loathe this guy.
If you were a billionaire facing jail time, would you try to skip the country? I sure would.
Here's the link, so you guys don't think I'm making this up: