I can understand the "R" rating for "Almost Famous" I find it funny that there has been such an ongoing debate on this forum regarding that. According to MPAA guidelines, many of which I think are dumb, the use of "Fuck" gets the "R" rating alone. We can surely debate whether that word merits the "R" Rating, but look what we also get:
Many instances of drug use, Including a charater taking acid and nearly killing himself by jumping off a roof and a character who almost kills herself by overdosing on quaaludes, pot smoking etc.
A fair amount of sexual content. Several women "Deflower" an underage kid, "Blowjob" reference etc.
Topless Kate Hudson, however brief, but clearly not in the same "artistic" context as "Titanic"
So with a combination of all that, I can accept the "R" rating