Help me complete a list of actors and actresses who were REGULARS on HIT TV series. Regulars doesn't mean they had to be the main stars but appeared regularly as a cast member (at least 20 episodes). Hit series is really used "loosely" but for this purpose we will define it as a series picked up for a full second season. Here are some I came up with:

1. Robert Conrad- Hawaiian Eye, Wild Wild West, Baa Baa Black Sheep
2. Heather Locklear - 4 TJ Hooker, Dynasty, Melrose Place, Spin City
3. Michael Landon - Bonanza, Little House on the Prairie, Highway to Heaven
4. John Ritter - 4 Threes Company , Hooperman, Hearts Afire, 8 Simple Rules
5. David Jansen - Richard Diamond, The Fugitive, Harry O
6. Lee Majors - 4 Big Valley, Owen Marshall, Six Million Dollar Man, The Fall Guy
7. Carroll O'Conner - All in the Family, Archie Bunkers Place, In the Heat of the Night
8. Kate Jackson - The Rookies, Charlies Angels, Scarecrow and Mrs King
9. Bill Cosby - 4 I Spy, The Bill Cosby Show, The Cosby Show, Cosby
10. Lucille Ball- I Love Lucy, The Lucy Show, Here's Lucy
11. Bill Bixby - My Favorite Martian, The Courtship of Eddie's Father, The Incredible Hulk
12. Susan Saint James - The Name of the Game, McMillan and Wife, Kate & Allie
13. Robert Wagner - It Takes a Thief, Switch, Hart to Hart
14. Brian Keith - Family Affair, The Brian Keith Show, Hardcastle & McCormick
15. Michael J Fox - 4 Family Ties, The Michael J Fox Show, Spin City, The Good Wife
16. William Shatner - Star Trek, TJ Hooker, Boston Legal
17. Gerald McRaney - 4 Simon and Simon, Major Dad, Promised Land, Jericho
18. Tony Randell - The Odd Couple, The Tony Randell Show, Love Sydney
19. Ted Danson - 6 Cheers, Becker, Damages, Bored to Death, CSI, The Good Place
20. Ted McGinley **- **6 Happy Days, The Love Boat, Dynasty, Married With Children, Hope and Faith, Transformers:Robots in Disguise

I will stop at 20 and leave some meat on the bone. I know there has to be more especially when you consider those I am weak on like newer TV shows, and those on HBO, Showtime, Netflix Originals, etc.