If it’s Monday night, it’s time to watch The Big C and Weeds on Showtime, but on August 1st we have an even better reason to watch The Big C. According to Soaps in Depth, former One Life to Live star Brittany Underwood (ex-Langston) will appear on The Big C as Greta, “a member of the swim team coached by Linney's character, Cathy.” Set your DVR!