The beloved actress and screenwriter tragically died in December last year after wrapping filming on the Channel 4 series, which served as a poignant tribute.
Tonight's episode covered themes of death, grief and alcoholism, as Sharon struggled to cope with a tragic loss and Rob had a relapse with his alcoholism.
As expected, the show ended with an in memoriam 'For Carrie' tribute during the closing credits, after a rather fitting farewell episode.
Better known as a comedy series, the episode was rather heavy-hitting tonight.
The ending also took a dramatic turn as Rob crashed his car, before admitting to Sharon he would't pass a breath test. However, viewers took to Twitter in their swarms to praise it.
Carrie in particular was at the forefront of a lot of viewers' minds, and here's what they had to think of it all.
Carrie Fisher dominated conversation on Twitter:
And as ever, there were some cracking one-liners:
Things took a rather dark turn at the end, but viewers thought it was brill:
However, there was one atrocity Twitter just couldn't overlook:
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