On of the faithful 4 may just love sacks more than I do. The peerless Mr Posh has done some serious heavy lifting on the stat front, breaking down stats across the NFL over the past handful of seasons.
Take a look at his spreadsheet here: https://spreadsheets.google.com/pub?key=0Ahu3CB_rokzmdDB0emlpTGJDU3hDaUo0Z3Y0blZCZlE&output=html
In particular, I love the SEA - Sacks by position tab that shows us which positions have contributed sacks for the Hawks. Check out the major drop-off from the LB spot in the last two years. That can largely be attributed to Julian Peterson's departure and the lack of sacks from Tatupu and Hill. Our DT position was non-existent in the pass rush last season (2.5).
The By Division tab is also chock-full-o-intrigue. It's a moderate surprise that the Seahawks have led the division in avg sacks/season since 2002. Both Arizona and SF had major sack jumps last year with +12 and +14 respectively.
It was also interesting to see in the Div Comparison tab that the NFC appears to get more sacks than the AFC. I encourage you to pour through the numbers and tell us what you find. Mr Posh, please tell us your thoughts!