| Actor | Character | Number of episodes appeared in |
| Patrick Kerr | |
| Harriet Sansom Harris | |
| 'Enzo' the dog/Moose | |
| David Hyde Pierce | |
| Millicent Martin | |
| Jean Smart | |
| Jane Adams | |
| Peri Gilpin | |
| Wendie Malick | |
| Jane Leeves | |
| Edward Hibbert | |
| | Actor | Character | Number of episodes appeared in |
| Ashley Thomas | |
| Anthony LaPaglia | |
| Dan Butler | |
| John Mahoney | |
| Felicity Huffman | |
| Saul Rubinek | |
| Tom McGowan | |
| Kelsey Grammar | |
| Bebe Neuwirth | |
| Trevor Einhorn | |
|