Yes but he was cured and then it came back so he's on chemo right now, should be back for next season, hopefully.
Just finished the first two seasons of true blood... I will probably finish them for no other reason other than I wasted teh DL ratio to get them. Not impressed. Parts of it are great (Eric's story, some of the other characters) but the whole "Southern Romance" horseshit that populates the rest of the plot line is just soooo bad.