These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Best Known for the Fanservice: Pretty much the poster child of the trope, though it was perhaps not as extreme as some recall/believe. For example, Farrah donned a swimsuit only once during the series (and that was because Jill was impersonating a swimming instructor), and Kate Jackson dressed conservatively throughout her tenure (as did Shelley Hack). Jaclyn Smith tended to don bikinis more frequently, but even she often dressed conservatively for the times. Cheryl Ladd, on the other hand, was frequently called upon to wear the tiniest bikinis allowed on late-1970s network TV. Fifth season angel Tanya Roberts also brought up the fanservice in the Hawaiian episodes.
Future James Bond Timothy Dalton guest stars in a 1979 episode. Early on, his character is described as a man of "James Bondian tastes."
The 1976 episode "Target: Angels" has Bosley talk about how difficult it would be to replace any of the Angels; he says this as he looks at Kate Jackson, whose departure two years later would see her replaced unsuccessfully. The same scene has Farrah Fawcett's character pipe up that Charlie can't find anyone to work as cheap as they do; this takes on irony give the circumstances surrounding her departure.
Never Live It Down: Kate Jackson left the show after the third season claiming she was simply tired of it, and that it had run its course for her. However, she originally was up for the lead role in Kramer Vs Kramer, which eventually went to (and got an Oscar for) Meryl Streep. Aaron Spelling refused to let her out of her contract. She also did not get along well with Fawcett replacement Cheryl Ladd, and after a particularly strange third season episode where the Angels infiltrate a marathon running competition, she decided it was time to quit.
Shelley Hack was never popular with viewers, and was dropped after the fourth season. This has made her quite the target for jokes on shows such as The Golden Girls. After an unsuccessful attempt at a followup series (the medical drama Cutter to Houston), Hack would later star in films such as The Stepfather and Troll, and in 2000, shortly before the release of the Charlie's Angels films, she hosted a week-long marathon on the Biography channel highlighting biographies of the original television show. Away from acting, however, Hack forged a successful career as a producer of televised political events in eastern Europe and as a media advisor.
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Evil Is Sexy: Eric Knox and Vivian Wood are both somewhat unkempt during the first half of the film. After The Reveal, they look much more appealing and attractive.
Madison Lee almost inverts this, as she was seen in a bikini before she was revealed as the Big Bad and is fully clothed in all of her villain scenes - save for the buildup to the climax where she's wearing lingerie and a fur coat.