I can see people thinking Tarantino is formulaic and a bit hit or miss and wouldn't really disagree.
With The Godfather I think the first film suffered from the other two being made but taken alone it is a magnificent movie.
But Blade Runner not having great performances or sub-plots? Per-lease! The scenery and setting is amazing, doubly so when compared with other films of the time. There are maybe half a dozen different performances that are absolutely mesmerising in their intensity and there most certainly are sub plots. There's the whole slave/master thing (not to mention the slave/slave relationship) which is widened into the God/being relationship and what a God is. there are the various inter-personal relationships but most importantly is the trip of discovery Deckerd takes and the underlying question of whether he is actually human.
One thing I would say is that the director's cut is far and away the best version as it puts back some threads that the studio cut. It actually changes the story somewhat as well, and is far closer to the book than the studio cleaned version. Also the extra bits of origami it includes are very important.
Anyway, I saw the Social Network last night and quite enjoyed it. Nothing great about it (for me) but nothing bad either. mind you I'm glad I don't do facebook!