If you wish to see who's done what so far in free agency, check ESPN's F/A tracker.
you can sort by team, position, status (signed/unsigned), type (UFA, RFA, etc.), or year and see for yourself who has done what so far.
Edit: I'll repost this link in the F/A tracker thread - although I think Playoffs might have already provided this link earlier in the thread.
he's provided nearly every damn thing else