24 Little-Known Seinfeld Cameos That Will Blow Your Mind
1. Marcia Cross as Sara Sidarides, Jerry’s love interest in the final season, episode 9, “The Slicer”
[youtube=http://www.youtube.com/watch?v=mGFoAX2Rf6g&w=584&h=390]
2. Kathy Griffin as Sally Weaver, Jerry’s nemesis, in the final season, episode 13, “The Cartoon”
[youtube=http://www.youtube.com/watch?v=OEJbXXs7dpw&w=584&h=390]
3. Jon Favreau as Eric the Clown in season 5, episode 19, “The Fire”
[youtube=http://www.youtube.com/watch?v=GuP9YClyPRY&w=584&h=390]
4. Jeremy Piven as Michael Barth (George) in season 4, final episode, “The Pilot”
[youtube=http://www.youtube.com/watch?v=8QjRgfVpHRg&w=584&h=390]
5. Catherine Keener as Jerry’s girlfriend in season 3, episode 21, “The Letter”
[youtube=http://www.youtube.com/watch?v=v54MdF8gGjA&w=584&h=390]
6. A 22-year-old Denise Richards as the 15-year-old daughter of Russell in season 4, episode 16, “The Shoes”
[youtube=http://www.youtube.com/watch?v=ezl_aqFdwbI&w=584&h=390]
7. Larry David as a man in a cape in season 6, episode 4, “The Chinese Woman”
[youtube=http://www.youtube.com/watch?v=KDbN9TZqFcg&w=584&h=390]
8. Amanda Peet as a waitress Jerry picks up in season 8, episode 22, “The Summer of George”
[youtube=http://www.youtube.com/watch?v=HCPQuBHs3Tg&w=584&h=390]
9. Megan Mullally plays George’s girlfriend in season 4, episode 19, “The Implant”
[youtube=http://www.youtube.com/watch?v=w6v7a2jh3QI&w=584&h=390]
10. Jennifer Coolidge as a masseuse and Jerry’s girlfriend in season 5, episode 9, “The Masseuse”
[youtube=http://www.youtube.com/watch?v=zLo3kbggWZs&w=584&h=390]
11. Janeane Garofalo as Jerry’s hero in season 7, episode 24, “The Invitations”
[youtube=http://www.youtube.com/watch?v=k6Y4W4PXYbI&w=584&h=390]
12. Marisa Tomei says George is her type in season 7, episode 14 and 15, “The Cadillac”
[youtube=http://www.youtube.com/watch?v=Znw2OHRigMA&w=584&h=390]
13. Molly Shannon as Elaine’s co-worker in season 8, episode 22, “The Summer of George”
[youtube=http://www.youtube.com/watch?v=Za1XVgQhsJU&w=584&h=390]
14. Lauren Graham as Jerry’s girlfriend in season 8, episode 20, “The Millenium”
[youtube=http://www.youtube.com/watch?v=Xe1ZdNCDPZg&w=584&h=390]
15. Brad Garrett as Tony the mechanic in season 7, episodes 21 and 22, “The Bottle Deposit”
[youtube=http://www.youtube.com/watch?v=6rNekvwaQuw&w=584&h=390]
16. Kristin Bauer van Straten as Jerry’s new fling who happens to have man hands in season 8, episode 3, “The Bizarro Jerry”
[youtube=http://www.youtube.com/watch?v=bSL4cmFW_GU&w=584&h=390]
17. Breaking Bad‘s Bryan Cranston as Dr. Tim Whatley, Jerry and Kramer’s dentist, in season 6, episode 19, “The Jimmy”
[youtube=http://www.youtube.com/watch?v=iMLKbXuv-xA&w=580&h=390]
18. Frasier‘s Jane Leeves as Marla, Jerry’s date, in season 4, episode 10, “The Virgin”
[youtube=http://www.youtube.com/watch?v=A6smarO9lX0&w=584&h=315]
19. Kramer is star-struck and awkward when he sees Fred Savage (playing himself) in LA in season 4 episode 1, “The Trip”
[youtube=http://www.youtube.com/watch?v=ebOvAX_Hk9Q&w=584&h=390]
20. Debra Messing as the crying girl in season 7, episode 23, “The Wait Out”
[youtube=http://www.youtube.com/watch?v=ZZ8HN1lrY3c&w=584&h=390]
21. Daniel Dae Kim as a medical student in season 9, episode 16, “The Burning”
[youtube=http://www.youtube.com/watch?v=wLRlbsBJhio&w=584&h=390]
22. Lisa Edelstein as George’s girlfriend in the first episode of season 5, “The Mango”
[youtube=http://www.youtube.com/watch?v=Jjzmuhb4kDA&w=584&h=390]
23. Clint Howard as a car hijacker in the first episode of season 4, “The Trip”
[youtube=http://www.youtube.com/watch?v=DxhXnEZltvA&w=584&h=390]
24. Rob Schneider as Elaine’s colleague and partially-deaf in season 7, episode 18, “The Friar’s Club”
[youtube=http://www.youtube.com/watch?v=lvcxvVLFG6M&w=584&h=390] 
