courtesy of cbs.com 'Mom' is officially coming to an end after eight seasons on CBS. This is a crushing blow for longtime fans of the hit comedy series. The signs were there when Allison Janney and Anna Faris signed contracts taking them through season eight. But, Janney told Ellen DeGeneres the other day, she would love to keep telling stories as long as she could. Apparently, the clock was ticking. The ensemble comedy is currently the fourth highest-rated on CBS so there is really no need for it to end. And Anna Faris being absent for the current season has very little to do with it, in our opinion. If anything, we have gotten to know the other characters much better. The series finale will air May 6th. No word on just how but Kristen Johnston, who plays Tammy Diffendorf, has already tweeted how sad she is . But, she thanked their fans who are truly devastated. We still have two-and-a-half months left so let's hope the best is yet to come!