The every-episode mega-marathon of The Simpsons continues on FXX – and damned if I’m not already sucked in, dividing my attention, and my DVR, between this marathon and the Doctor Who one over on BBC America. You can’t go wrong either way – but make special plans to watch or record The Simpsons today at 4 p.m. ET, when one of the series’ very best episodes is repeated: the Season 4 classic “A Streetcar Named Marge,” in which a Springfield community theater production presents a musical version of A Streetcar Named Desire. Absolutely brilliant.