E! Online reports that James Marsters is returning for four episodes of "Smallville":

We last saw Marsters's character, Dr. Milton Fine (aka Brainiac), in Smallville's fifth season finale.

While it's unclear exactly how James is returning, I can tell you he's reprising the exact same character, he's returning to set very soon and his episodes begin airing in January.

"Smallville" premieres on The CW Thursday night

From
http://movieblog.ugo.com/index.php/movieblog/more/bryan_singer_headed_for_superman_trial/

The widow and daughter of Superman co-creator Jerry Siegel are suing Warner Bros. for 50% of the rights for both Superboy and Superman. The Siegels are basing their claims on the definition of copyright claims as they were defined when Siegel and Jerome Shuster sold their interest in Superman to DC Comics back in 1938, revised in later years, and specificed by the American government as to how copyright could be reclaimed by the creators.

TV shows like Smallville could be affected.