Interesting that with all the attention on the impending free agents - Butler, Hightower, Collins, Ryan, Sheard, Vollmer, etc. it's Freeney and Slater that get extensions.
This team has a focus on special teams that no other team comes close to matching. Listen to Belichick light up about a good punter. How many teams draft a long snapper? Most special teams players are the fifth wide receiver, the fourth corner, the fourth safety, the fifth linebacker, and so forth. The Patriots have guys like Slater, Ebner, King, who are clearly special teams first.