Valentine is yet another slasher flick where you try to guess the identity of the killer (knowing it could be anyone in the set of characters introduced) as they go about dispatching their victims one by one.
In this particular case, the killer's motivation stems from the fact that he was made fun of in middle school and therefore decides to exact his revenge when he's grown up (fiction mimicking real life in the US). We are given a good clue as to the identity of the killer, but we are unsure as to who they could be since the assumption is that he doesn't look the same anymore.
The actors (who include David "Angel" Borneaz and Bond girl Denise Richards) do a decent job. The suspense level is fairly high and one of the people I saw the film with had nightmares about it. Valentine is a decent time killer if you are into the genre.