SUPERNATURAL
CW, 9:00 p.m. ET
It’s a geekapalooza episode, again, as genre darling Felicia Day returns for another guest spot as Charlie, a big fan of the Winchester brothers. Day, of course, came to prominence in one of the geekiest genre success stories of all, as the leading lady in Joss Whedon’s Internet sensation, Dr. Horrible’s Sing-Along Blog, starring Neil Patrick Harris.