I was hoping for longer, but 100 minutes is a decent length -- mainly because it allows a filmmaker (even in this current era of incredibly long end-credit crawls) to get in at least 90-95 minutes of narrative and characterization and, in this case, action set-pieces. Yes, the optimist in me hoped the film would be longer, way longer, James Cameron-style longer. However, the realist in me always figured that that was unlikely. Moreover, I recently re-watched John Carpenter's excellent Escape from New York, which is only 99 minutes long, and marveled at just how lean and muscular and utterly exciting it still is. There's not a wasted moment in that entire film and it leaves you wanting for more, not wearily wishing it to end before it does. If AVP, at a mere 60 seconds longer than Escape from New York, can pull off that same feat, I'll be pleased.