I used to refer to Pam as "Dead Parrot Anderson" (a comment on her acting abilities), until I realised that this was an insult to the parrot in the Monty Python sketch, which was a FAR better actor.
I think Pam's breasts are displayed in the first 4 minutes of this film - if this film was meant to be "erotic" in some way, there could at least have been some buildup to the sex scenes.
Some more characterisation so that we could have a little interest in the people (up & coming artist, with brilliant but pre-occupied scientist boyfriend, lecherous "friend" after the girl - surely the scriptwriter could have done a little more with this situation) before Pam reveals all would have gone a long way. I have no objection to such scenes if they are really part of the plot, but here they were quite irrelevant.