he still finished as the #5 overall QB. And this was despite missing pretty much all of week 17 (6/8 for 76 yards before he got pulled).
That's a bit misleading. Hasselbeck finished #5
because he played 15 games, not despite it. Vick, the AZ QBs, Bulger and McNabb all were better fantasy players when they were on the field. (I'm adjusting Vick's time for actual time missed, so not dividing by 15 games)
http://subscribers.footballguys.com/2006/0..._rearviewqb.php
As I wrote there, Hasselbeck was just outside the top 10 after adjusting for games played and SOS. He's slightly better than the average fantasy QB in terms of adding value (once again, this is after adjusting for SOS and games played). This is also exactly where he ranked in 2004. His 2004 and 2005 seasons were nearly identical.