| Season Episode: 12x01 |
| Episode: 423 |
| Production Number: 12x01 |
| Original Air Date: 2007-08-11 |
| Title: Season 12, Episode 1 |
|  |
| Season Episode: 12x02 |
| Episode: 424 |
| Production Number: 12x02 |
| Original Air Date: 2007-08-18 |
| Title: Season 12, Episode 2 |
| |
| Season Episode: 12x03 |
| Episode: 425 |
| Production Number: 12x03 |
| Original Air Date: 2007-08-25 |
| Title: Season 12, Episode 3 |
| |
| Season Episode: 12x04 |
| Episode: 426 |
| Production Number: 12x04 |
| Original Air Date: 2007-09-01 |
| Title: Season 12, Episode 4 |
| |
| Season Episode: 12x05 |
| Episode: 427 |
| Production Number: |
| Original Air Date: 2007-09-08 |
| Title: Season 12, Episode 5 |
| |
| Season Episode: 12x06 |
| Episode: 428 |
| Production Number: |
| Original Air Date: 2007-09-15 |
| Title: Season 12, Episode 6 |
| |
| Season Episode: 12x07 |
| Episode: 429 |
| Production Number: |
| Original Air Date: 2007-09-22 |
| Title: Season 12, Episode 7 |
| |
| Season Episode: 12x08 |
| Episode: 430 |
| Production Number: |
| Original Air Date: 2007-09-29 |
| Title: Season 12, Episode 8 |
| |
| Season Episode: 12x09 |
| Episode: 431 |
| Production Number: |
| Original Air Date: 2007-10-06 |
| Title: Season 12, Episode 9 |
| |
| Season Episode: 12x10 |
| Episode: 432 |
| Production Number: |
| Original Air Date: 2007-10-13 |
| Title: Season 12, Episode 10 |
| |
| Season Episode: 12x11 |
| Episode: 433 |
| Production Number: |
| Original Air Date: 2007-10-20 |
| Title: Season 12, Episode 11 |
| |
| Season Episode: 12x12 |
| Episode: 434 |
| Production Number: |
| Original Air Date: 2007-10-27 |
| Title: Season 12, Episode 12 |
| |
| Season Episode: 12x13 |
| Episode: 435 |
| Production Number: |
| Original Air Date: 2007-11-03 |
| Title: Season 12, Episode 13 |
| |
| Season Episode: 12x14 |
| Episode: 436 |
| Production Number: |
| Original Air Date: 2007-11-10 |
| Title: Season 12, Episode 14 |
| |
| Season Episode: 12x15 |
| Episode: 437 |
| Production Number: |
| Original Air Date: 2007-11-17 |
| Title: Season 12, Episode 15 |
| |
| Season Episode: 12x16 |
| Episode: 438 |
| Production Number: |
| Original Air Date: 2007-11-24 |
| Title: Season 12, Episode 16 |
| |
| Season Episode: 12x17 |
| Episode: 439 |
| Production Number: |
| Original Air Date: 2007-12-01 |
| Title: Season 12, Episode 17 |
| |
| Season Episode: 12x18 |
| Episode: 440 |
| Production Number: |
| Original Air Date: 2007-12-08 |
| Title: Season 12, Episode 18 |
| |
| Season Episode: 12x19 |
| Episode: 441 |
| Production Number: |
| Original Air Date: 2007-12-15 |
| Title: Season 12, Episode 19 |
| |
| Season Episode: 12x20 |
| Episode: 442 |
| Production Number: |
| Original Air Date: 2007-12-22 |
| Title: Season 12, Episode 20 |
| |
| Season Episode: 12x21 |
| Episode: 443 |
| Production Number: |
| Original Air Date: 2007-12-29 |
| Title: Season 12, Episode 21 |
| |
| Season Episode: 12x22 |
| Episode: 444 |
| Production Number: |
| Original Air Date: 2008-01-05 |
| Title: Season 12, Episode 22 |
| |
| Season Episode: 12x23 |
| Episode: 445 |
| Production Number: |
| Original Air Date: 2008-01-12 |
| Title: Season 12, Episode 23 |
| |
| Season Episode: 12x24 |
| Episode: 446 |
| Production Number: |
| Original Air Date: 2008-01-19 |
| Title: Season 12, Episode 24 |
| |
| Season Episode: 12x25 |
| Episode: 447 |
| Production Number: |
| Original Air Date: 2008-01-26 |
| Title: Season 12, Episode 25 |
| |
| Season Episode: 12x26 |
| Episode: 448 |
| Production Number: |
| Original Air Date: 2008-02-02 |
| Title: Season 12, Episode 26 |
| |
| Season Episode: 12x27 |
| Episode: 449 |
| Production Number: |
| Original Air Date: 2008-02-09 |
| Title: Season 12, Episode 27 |
| |
| Season Episode: 12x28 |
| Episode: 450 |
| Production Number: |
| Original Air Date: 2008-02-16 |
| Title: Season 12, Episode 28 |
| |
| Season Episode: 12x29 |
| Episode: 451 |
| Production Number: |
| Original Air Date: 2008-02-23 |
| Title: Season 12, Episode 29 |
| |
| Season Episode: 12x30 |
| Episode: 452 |
| Production Number: |
| Original Air Date: 2008-03-01 |
| Title: Season 12, Episode 30 |
| |
| Season Episode: 12x31 |
| Episode: 453 |
| Production Number: |
| Original Air Date: 2008-03-08 |
| Title: Season 12, Episode 31 |
| |
| Season Episode: 12x32 |
| Episode: 454 |
| Production Number: |
| Original Air Date: 2008-03-15 |
| Title: Season 12, Episode 32 |
| |
| Season Episode: 12x33 |
| Episode: 455 |
| Production Number: |
| Original Air Date: 2008-03-22 |
| Title: Season 12, Episode 33 |
| |
| Season Episode: 12x34 |
| Episode: 456 |
| Production Number: |
| Original Air Date: 2008-03-29 |
| Title: Season 12, Episode 34 |
| |
| Season Episode: 12x35 |
| Episode: 457 |
| Production Number: |
| Original Air Date: 2008-04-05 |
| Title: Season 12, Episode 35 |
| |
| Season Episode: 12x36 |
| Episode: 458 |
| Production Number: |
| Original Air Date: 2008-04-12 |
| Title: Season 12, Episode 36 |
| |
| Season Episode: 12x37 |
| Episode: 459 |
| Production Number: |
| Original Air Date: 2008-04-19 |
| Title: Season 12, Episode 37 |
| |
| Season Episode: 12x38 |
| Episode: 460 |
| Production Number: |
| Original Air Date: 2008-04-26 |
| Title: Season 12, Episode 38 |
| |
| Season Episode: 12x39 |
| Episode: 461 |
| Production Number: |
| Original Air Date: 2008-05-03 |
| Title: Season 12, Episode 39 |
| |
| Season Episode: 12x40 |
| Episode: 462 |
| Production Number: |
| Original Air Date: 2008-05-10 |
| Title: Season 12, Episode 40 |
| |
| Season Episode: 12x41 |
| Episode: 463 |
| Production Number: |
| Original Air Date: 2008-05-17 |
| Title: Season 12, Episode 41 |
| |
