1. Valerie Bertinelli played an angel in this CBS series for the final two seasons. Promised Land 7th Heaven Joan of Arcadia Touched By An Angel

2. Judyann Elder was brought in as a replacement for another actress in this family style sitcom. Growing Pains Full House Family Matters Step By Step

3. This WB drama had Rose McGowan as Paige Matthews, beginning in the fourth season. Angel Everwood Smallville Charmed

4. Mary Jane Croft played Mary Jane Lewis in this sitcom that starred a television legend. The Lucy Show The Mary Tyler Moore Show The Andy Griffith Show The Bob Newhart show

5. Pamela Anderson was on this television series for 5 of its 11 seasons. Baywatch Boston Public Beverly Hills, 90210 Beastmaster

6. Megan Fox took over the role of Sydney in this sitcom's second season. It aired as part of ABC's TGIF in the 2004-2005 season. Less Than Perfect 8 Simple Rules Complete Savages Hope and Faith

7. The ABC comedy that starred Michael J. Fox from 1996-2000, also starred Heather Locklear for its final three seasons. Melrose Place Mad About You Family Ties Spin City

8. Before Ashley Johnson could join the cast of this comedy series, her character would first have to be born. Full House The Nanny Growing Pains Everybody Loves Raymond

9. This series premiered in 1972 and ended in 1978. Rue McClanahan joined the cast in 1974 as Vivian. Good Times All In The Family Maude The Jeffersons

10. Although she was added to the opening credits in seasons 8 and 9 of this popular sitcom, Lynda Goodfriend did play a recurring character in seasons 5, 6 and 7. Happy Days Mork and Mindy Laverne and Shirley Cheers