Season 15 holds the highest collective average score across the series.
Season 15 Details →Lowest score variance (σ = 0.41), maintaining an average of 8.2.
Complete Episode Rating Matrix
Interactive score chart by season and episode number. Darker green indicates higher ratings; amber and red denote lower reception.
Ratings Analysis & Trajectory
Across 16 seasons and 171 episodes, Research Unit has earned an overall series rating of 8.0 out of 10. The series demonstrates an upward quality trajectory, with later seasons sustaining higher viewer acclaim than its debut.
The single highest-rated hour of television in the series is Season 2, Episode 5 ("Episode 5"), rated at an extraordinary 9.0/10 with 1 ratings. Conversely, the lowest-rated installment is Season 6, Episode 10 ("Episode 10"), landing at 6.0/10.
The most precipitous single-episode shift occurred in Season 3 between Episode 8 ("Episode 8", 9) and Episode 9 ("Episode 9", 7), a swing of 2 points.
Top 10 Highest Rated Episodes of Research Unit
| Rank | Episode | Title | Score | Votes | Air Date |
|---|---|---|---|---|---|
| #1 | Season 2, Ep 5 | Episode 5 | 9.0 | 1 | Sep 20, 2007 |
| #2 | Season 2, Ep 8 | Episode 8 | 9.0 | 1 | Sep 27, 2007 |
| #3 | Season 3, Ep 8 | Episode 8 | 9.0 | 1 | Jan 22, 2009 |
| #4 | Season 4, Ep 4 | Episode 4 | 9.0 | 1 | Sep 17, 2009 |
| #5 | Season 4, Ep 7 | Episode 7 | 9.0 | 1 | Oct 1, 2009 |
| #6 | Season 4, Ep 14 | Episode 14 | 9.0 | 1 | Mar 11, 2010 |
| #7 | Season 5, Ep 2 | Episode 2 | 9.0 | 1 | Mar 10, 2011 |
| #8 | Season 5, Ep 14 | Episode 14 | 9.0 | 1 | Apr 28, 2011 |
| #9 | Season 7, Ep 1 | Episode 1 | 9.0 | 1 | Feb 28, 2013 |
| #10 | Season 7, Ep 3 | Episode 3 | 9.0 | 1 | Mar 7, 2013 |