2009-2015, 6 Seasons
Mentioned in Season 3, Episode 3
It's pretty likely you've already heard of Glee, but just in case you were marooned on a wi-fi-less, TV-less desert island / medical facility in 2010, it's a musical comedy about a bunch of dweeby high-school singers. Hywel loves it while Jamie hates everything about it other than the performance of Jane Lynch (which almost makes each musical number worth it).
However we were quite nice about it when one of the stars, Kevin McHale, joined us on Series 3 Episode 3.