Russian Doll, Season 1 (Netflix, 2019) Groundhog Day meets Sliding Doors, only darker. Russian Doll is jarringly self-indulgent in the early episodes but comes into its own once the glorification of New York eases off (allowing for a proper exploration of concept). Natasha Lyonne rocks the lead role.
Run Lola Run dir. Tom Tykwer (1998) Contemporaneous cousin to the parallel-universe-exploring UK/US film Sliding Doors, this high-energy action thriller out of Germany (subtitled) was particularly effective on the big screen, its pulsating soundtrack running variations alongside flame-haired protagonist Lola as her decisions give rise to drastically different outcomes.