Okay, Selena's educated guide to Beatle related Bio Pics (doesn't cover everyone, just the best known ones):

"Birth of the Beatles" (1978)

The only one shot when John was still alive. Boasts of Pete Best as technical advisor, which is an explanation as to why everyone from Brian to George Martin to Ringo says Pete is the superior drummer and can't understand why the band wants Ringo instead. The dialogue is pretty dreadful otherwise, too.

"The Ballad of John and Yoko"/"John and Yoko: A Love Story": boasts of the fastest recovery from heroin sequence in tv history. On the plus side, is the only version that renembers Yoko had a life before John and a family of her own, and focuses on the racism in the fannish hostility towards her. (Not surprisingly, since she was involved in the production.) On the minus side, whitewashes John to an embarassing degree (he's nicesness itself when telling his first wife, Cynthia, that he wants to marry Yoko, as opposed to the pretty famous way he told her in reality, i.e. letting her find them with Yoko in Cyn's bathrobe), Cynthia is a dull mouse who is there in only three scenes, two about the divorce anyway, there are no difficulties with John and Julian, May Pang doesn't exist, etc.

"Backbeat": is the Stuart Sutcliff/Astrid Kirchherr story, doesn't pretend to be anything else. On the plus side, is open about homoerotic subtext between Stu and John, boasts of Ian Hart as a really good young John Lennon. On the minus side, drives Beatles fans crazy by getting the musical side of things consistently wrong (John is presented as the sole lead singer and ends up singing all the songs Paul actually sang lead for, notably Long Tall Sally, which is why Mr. McCartney feels a particular ire towards this picture - I mean, if Little Richard had told you your performance of his song was his favourite, wouldn't you?), doesn't offer much in the ways of characterisation for the non-John Beatles, ignores admitted competition of Stu and Paul for John's attention in favour of inventing competition between John and Astrid for Stu (in reality, John was very enthusiastic about Astrid), and as I said, should not be regarded as the story of the Beatles in Hamburg, as opposed to being the story of Stu and Astrid.

"The Hour and the Times": The one about Brian Epstein holidaying with John in Barcelona in 1963. Essentially a two person chamber play, more theatre than film. Has Ian Hart as young John, too, being very good at it, and a good Brian, too, but as I said feels very much like a filmed play even though it was actually not. Boasts of one of the most deliberately awkward m/m make out scenes in film history, which lead some slash fans to complain it's not sexy. I'd say it's naturalistic.

"Lennon Naked": has Christopher Ecclestone being 25 years older than the John Lennon he plays, being intense but alas completely humourless and an unrelenting jerk to everyone but Yoko (who is a woman of mystery and no backstory or goal in life other than to safe John from himself), so that you don't understand what anyone ever saw in the guy. The other extreme to the whitewashed saint of "The Ballad of John and Yoko".

"Two of Us": boasts of having a director who actually directed the real Beatles as well, Michael Lindsay-Hogg. Is like the John and Brian pic very much a two people chamber play, about the April 1976 visit Paul paid John in New York. Sometimes a bit on the as you know, Bob, side with the exposition dialogue (because, well, they knew about each other's dead mothers because they'd kinda been there when it happened), but actually remembers these guys have a sense of humor and offers a good mixture of humor and post break-up angst. Also boasts of playful kiss in an elevator and unpunished by narrative smoking of pot.

"Nowhere Boy": you've seen that one, right? Mimi and Julia and young John centric. Takes considerable liberties, but wins for beign a film that's enjoyable even if you don't know the boy in it ends up being John Lennon, simply as a story of two sisters and a coming of age, aka They fuck you up, your mum and aunt, they may not mean to, but they do. The director wins for best visuals in a Beatles film, not surprisingly since she comes from painting, and for backstage diplomacy by being pals with Yoko and Paul both.

"The Linda McCartney Story": like "The Ballad of John and Yoko", only with Linda and Paul in the role of the lovers against the world. Has Juliet from "Lost" as Linda, the same Paul as "Backbeat" (who is also Richard Mayhew in "Neverwhere") and lots of good intentions, but absolutely cringe worthy dialogue (says Paul when relating his backstory to Linda, about his mother, "her name was Mary McCartney", I kid you not). Boasts of a John actor even older than Eccles in the role of not yet thirty years John. Oh, and the Mick Jagger is also a really bad impersonation.

In conclusion: if in doubt, watch A Hard Day's Night instead. :)