| Episode | Channel | Broadcast | Viewers | Share | Pos | |
| Why on Earth? | |  |  | Fri 20 Apr 2007 10:45pm EDT | | | |  |
| Why on Earth? | |  | | Sun 29 Apr 2007 7:45pm EDT | | | | |
| Why on Earth? | |  | | Sun 29 Apr 2007 7:45pm EDT | | | | |
| Why on Earth? | |  | | Sun 29 Apr 2007 8:45pm CDT | | | | |
| Why on Earth? | |  | | Wed 2 May 2007 10:45pm EDT | | | | |
| Why on Earth? | | | | Thu 3 May 2007 10:45pm CDT | | | | |
| Why on Earth? | | | | Fri 4 May 2007 3:45am EDT | | | | |
| Why on Earth? | | | | Sat 5 May 2007 12:45am EDT | | | | |
| Why on Earth? | |  | | Sat 5 May 2007 8:45pm CDT | | | | |
| Why on Earth? | |  | | Sat 5 May 2007 11:45pm EDT | | | | |
| Why on Earth? | |  | | Sat 5 May 2007 11:45pm EDT | | | | |
| Why on Earth? | |  | | Sat 5 May 2007 11:45pm EDT | | | | |
| Why on Earth? | | | | Sun 6 May 2007 6:45pm EDT | | | | |
| Why on Earth? | | | | Mon 7 May 2007 12:15am EDT | | | | |
| Why on Earth? | |  | | Tue 8 May 2007 8:45pm PDT | | | | |
| Why on Earth? | | | | Wed 9 May 2007 2:45am PDT | | | | |
| Why on Earth? | | | | Thu 10 May 2007 11:45pm EDT | | | | |
| Why on Earth? | |  | | Thu 10 May 2007 10:45pm PDT | | | | |
| Why on Earth? | | | | Sat 12 May 2007 11:45pm PDT | | | | |
| Why on Earth? | | | | Sun 13 May 2007 4:45am PDT | | | | |
| Why on Earth? | | | | Sun 13 May 2007 5:45pm PDT | | | | |
| Why on Earth? | |  | | Sun 27 May 2007 12:45am EDT | | | | |
| Why on Earth? | |  | | Sat 9 Jun 2007 11:44pm EDT | | | | |
| Why on Earth? | |  | | Sun 10 Jun 2007 12:45am CDT | | | | |
| Why on Earth? | | | | Sun 10 Jun 2007 3:42am EDT | | | | |
| Why on Earth? | |  | | Sat 30 Jun 2007 11:45pm EDT | | | | |
| Why on Earth? | | | | Fri 3 Aug 2007 10:45pm EDT | UNCONFIRMED | |
| Why on Earth? | | | | Sun 5 Aug 2007 3:45pm EDT | | | | |
| Why on Earth? | |  | | Thu 9 Aug 2007 10:45pm PDT | | | | |
| Why on Earth? | | | | Sun 12 Aug 2007 4:45am PDT | | | | |
| Why on Earth? | | | | Sun 12 Aug 2007 5:45pm PDT | | | | |
| Why on Earth? | | | | Thu 16 Aug 2007 10:45pm CDT | | | | |
| Why on Earth? | | | | Sat 25 Aug 2007 11:45pm EDT | | | | |
| Why on Earth? | | | | Tue 28 Aug 2007 8:45pm PDT | | | | |
| Why on Earth? | | | | Wed 29 Aug 2007 2:45am PDT | | | | |
| Why on Earth? | | | | Sat 1 Sep 2007 11:45pm EDT | | | | |
| Why on Earth? | | | | Sat 1 Sep 2007 11:45pm PDT | | | | |
| Why on Earth? | | | | Mon 3 Sep 2007 12:15am EDT | | | | |
| Why on Earth? | | | | Sat 8 Sep 2007 11:43pm EDT | | | | |
| Why on Earth? | | | | Sat 8 Sep 2007 11:45pm EDT | | | | |
| Why on Earth? | | | | Sun 9 Sep 2007 3:46am EDT | | | | |
| Why on Earth? | | | | Sun 9 Sep 2007 7:45pm EDT | | | | |
| Why on Earth? | | | | Thu 13 Sep 2007 10:45pm EDT | | | | |
| Why on Earth? | |  | | Fri 14 Sep 2007 10:45pm CDT | | | | |
| Why on Earth? | | | | Sat 22 Sep 2007 11:45pm CDT | | | | |
| Why on Earth? | |  | | Sun 7 Oct 2007 10:45pm CDT | | | | |
| Why on Earth? | | | | Sat 27 Oct 2007 11:47pm EDT | | | | |
| Why on Earth? | |  | | Thu 1 Nov 2007 10:45pm EDT | | | | |
| Why on Earth? | | | | Sun 4 Nov 2007 1:45am EDT | | | | |
| Why on Earth? | |  | | Sat 29 Dec 2007 11:45pm PST | | | | |
| Why on Earth? | | | | Thu 3 Jan 2008 7:45pm PST | | | | |
| Why on Earth? | | | | Sun 6 Jan 2008 12:15am EST | | | | |
| Why on Earth? | | | | Thu 31 Jan 2008 10:45pm EST | | | | |
| Why on Earth? | | | | Sat 2 Feb 2008 12:15am EST | | | | |
| Why on Earth? | | | | Sun 3 Feb 2008 1:45am EST | | | | |
| Why on Earth? | | | | Sun 3 Feb 2008 12:45am CST | | | | |
| Why on Earth? | | | | Sun 23 Mar 2008 12:45am EDT | | | | |
| Why on Earth? | | | | Sat 5 Apr 2008 11:46pm EDT | | | | |
| Why on Earth? | | | | Sat 14 Jun 2008 1:45am EDT | | | | |
| Why on Earth? | |  | | Sat 4 Oct 2008 6:42pm EDT | | | | |
| Why on Earth? | | | | Thu 9 Oct 2008 8:42pm EDT | | | | |
| Why on Earth? | | | | Sun 19 Oct 2008 12:45am CDT | | | | |
| Why on Earth? | | | | Mon 10 Nov 2008 8:46pm PST | | | | |
| Why on Earth? | | | | Tue 11 Nov 2008 2:46am PST | | | | |
| Why on Earth? | | | | Sun 16 Nov 2008 5:46pm PST | | | | |
| Why on Earth? | | | | Fri 2 Jan 2009 11:45pm PST | | | | |
| Why on Earth? | | | | Sat 3 Jan 2009 5:45am PST | | | | |
| Why on Earth? | | | | Mon 22 Dec 2014 3:45am EST | | | | |
| Why on Earth? | | | | Sat 27 Dec 2014 6:15pm EST | | | | |
| Why on Earth? | |  | | Sun 13 Mar 2016 12:42am EST | | | | |
