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| Season Episode: 4x02 |
| Episode: 58 |
| Production Number: 408 |
| Original Air Date: 2003-09-29 |
| Title: Return to Las Vegas (1) |
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| Season Episode: 4x03 |
| Episode: 59 |
| Production Number: 409 |
| Original Air Date: 2003-10-06 |
| Title: Return to Las Vegas (2) |
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| Season Episode: 4x06 |
| Episode: 62 |
| Production Number: 401 |
| Original Air Date: 2003-10-27 |
| Title: Halloween Episode |
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| Season Episode: 4x07 |
| Episode: 63 |
| Production Number: 405 |
| Original Air Date: 2003-11-03 |
| Title: All Female Episode #2 |
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| Season Episode: 4x08 |
| Episode: 64 |
| Production Number: 418 |
| Original Air Date: 2003-11-04 |
| Title: Four Stunt Episode #2 |
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| Season Episode: 4x11 |
| Episode: 67 |
| Production Number: 410 |
| Original Air Date: 2003-11-24 |
| Title: Family Fear Factor |
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| Season Episode: 4x14 |
| Episode: 70 |
| Production Number: 421 |
| Original Air Date: 2004-01-05 |
| Title: Fear Factor Twins #2 |
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| Season Episode: 4x15 |
| Episode: 71 |
| Production Number: 411 |
| Original Air Date: 2004-01-12 |
| Title: Couples Fear Factor (1) |
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| Season Episode: 4x16 |
| Episode: 72 |
| Production Number: 412 |
| Original Air Date: 2004-01-19 |
| Title: Couples Fear Factor (2) |
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| Season Episode: 4x17 |
| Episode: 73 |
| Production Number: 413 |
| Original Air Date: 2004-01-19 |
| Title: Couples Fear Factor (3) |
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| Season Episode: 4x18 |
| Episode: 74 |
| Production Number: 414 |
| Original Air Date: 2004-01-26 |
| Title: Couples Fear Factor (4) |
| |
| Season Episode: 4x19 |
| Episode: 75 |
| Production Number: 415 |
| Original Air Date: 2004-02-02 |
| Title: Couples Fear Factor (5) |
| |
| Season Episode: 4x20 |
| Episode: 76 |
| Production Number: 416 |
| Original Air Date: 2004-02-09 |
| Title: Couples Fear Factor (6) |
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| Season Episode: 4x21 |
| Episode: 77 |
| Production Number: 417 |
| Original Air Date: 2004-02-16 |
| Title: Couples Fear Factor (7) |
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| Season Episode: 4x22 |
| Episode: 78 |
| Production Number: 422 |
| Original Air Date: 2004-02-17 |
| Title: Four Stunt Episode #3 |
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| Season Episode: 4x23 |
| Episode: 79 |
| Production Number: 423 |
| Original Air Date: 2004-02-23 |
| Title: Four Stunt Episode #4 |
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| Season Episode: 4x24 |
| Episode: 80 |
| Production Number: 426 |
| Original Air Date: 2004-03-01 |
| Title: All Female Episode #3 |
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| Season Episode: 4x25 |
| Episode: 81 |
| Production Number: 424 |
| Original Air Date: 2004-03-08 |
| Title: Siblings Fear Factor |
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| Season Episode: 4x29 |
| Episode: 85 |
| Production Number: 429 |
| Original Air Date: 2004-04-12 |
| Title: Miss USA Edition #2 |
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