Porridge
S3 E3 Rough Justice Fletcher decides that Harris must be put on trial for stealing from another prisoner, and one of Fletcher's little earners, writing letters for illiterate inmates, looks like it's coming to an end.
Not Going Out
S2 E5 Art In an effort to appear as intellectual as Lucy's friends, Lee shows off his 'knowledge' of the art world - holding forth on the subject of an unknown artist, who his cleaner Barbara has told him is the next big thing. When Lucy takes the advice and invests a fortune in the artist's work, Lee is left trying to prevent her from finding out the artist is actually a nobody.
Colin's Sandwich
S2 E6 Out to Lunch Struggling writer Colin has the unenviable daytime job of listening to the complaints of the public using British Railways.