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| Aflevering | Eerste uitzending |
|---|---|
| S04E01 - Founder's Day | 09/07/2010 |
| S04E02 - A New World | 16/07/2010 |
| S04E03 - All the Rage | 23/07/2010 |
| S04E04 - The Story of O2 | 30/07/2010 |
| S04E05 - Crossing Over | 06/08/2010 |
| S04E06 - Momstrosity | 13/08/2010 |
| S04E07 - Stoned | 20/08/2010 |
| S04E08 - The Ex-files | 27/08/2010 |
| S04E09 - I'll Be Seeing You | 10/09/2010 |
| S04E10 - O Little Town | 07/12/2010 |
| S04E11 - Lift Off | 11/07/2011 |
| S04E12 - Reprise | 18/07/2011 |
| S04E13 - Glimpse | 25/07/2011 |
| S04E14 - Up in the Air | 01/08/2011 |
| S04E15 - Omega Girls | 08/08/2011 |
| S04E16 - Of Mites and Men | 15/08/2011 |
| S04E17 - Clash of the Titans | 22/08/2011 |
| S04E18 - This One Time at Space Camp... | 29/08/2011 |
| S04E19 - One Small Step... | 12/09/2011 |
| S04E20 - One Giant Leap... | 19/09/2011 |
| S04E21 - Do You See What I See | 06/12/2011 |